CVE-2026-25602

MEDIUMNVD 4.44.4
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 4.4 from GitHub Security Advisory published 2026-05-20. NVD baseline CVSS 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2026-31094 (ENISA EUVD) · GHSA-r47h-9xx2-mw53 (GitHub Security Advisories)Source: ENISA EUVD

4.4EG
EchelonGraph verdictMonitorNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 4.4Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (EU Agency for Cybersecurity (ENISA)) lists Mesalvo Meona Server versions 2025.04 up to but not including 2025.04.24 and 2026.03 up to but not including 2026.03.02; Mesalvo Meona Client versions 2025.04 up to but not including 2025.04.24 and 2026.03 up to but not including 2026.03.02 as affected. No release containing a fix is confirmed on record.

Insufficient Verification of Data Authenticity in the feedback function of Mesalvo MEONA (MEONA Client and MEONA Server). The MEONA Client transmits the recipient address of a feedback report to the MEONA Server, and the server sends the report to the transmitted address instead of the address configured on the server. The feedback function is available only in the MEONA administration area, which requires one of the administrative roles ADMINISTRATOR, SUPERADMINISTRATOR or TYPIST (catalogue editing), or the PHARMACIST role holding the PHARMACY_ADMINISTRATOR right, assigned explicitly by the operating hospital's administrators. Such a user who modifies the client request can cause the MEONA Server to send a message with content of the user's choosing, from the sender address configured on the server, to a recipient of the user's choosing, within the limits permitted by the operator's mail relay. The message can be used for social engineering because it appears to originate from an internal hospital system. Exploitation requires a MEONA account with one of the administrative roles named above and access to the operating hospital's internal network; MEONA is operated exclusively within closed hospital networks without exposure to the public Internet, and where a hospital permits remote access to that network at all, it is only through the hospital's own remote-access infrastructure (e.g. VPN) under the hospital's control. The message contains only the recipient, subject and text entered by the user; no data of other users or patients is disclosed. Mesalvo is not aware of any exploitation outside the reported security test. This issue affects MEONA Client and MEONA Server in versions 2024.10, 2025.04 (before 2025.04.24) and 2026.03 (before 2026.03.02). MEONA 2025.04.24 and 2026.03.02 (planned Q4 2026) enforce the configured recipient address on the server. Operators can restrict at their mail relay which recipients the MEONA sender address may reach.

CVSS v3
4.4
EG Score
4.4MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity44% × 45%
Impact severity (EG Severity): CVSS 4.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation<0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (4.4): severity, escalated by confirmed exploitation. This CVE's 4.4 is its impact severity (EG Severity), not escalated.

EG Severity
4.4 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
<0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 20, 2026

Last Modified

September 25, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
No fix on record yet.
Web page

Prescribing Security: Uncovering 5 CVEs in a Healthcare Application | SecCore GmbH

https://seccore.at/blog/cves-meona/

Vendor Advisories for CVE-2026-25602(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 29× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 221 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 122 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-31 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-30 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-28 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-27 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-10-25 14:39 UTCEG score recompute
  8. 2026-10-24 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-10-23 04:30 UTCEG score recompute
  10. 2026-10-23 04:30 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-10-18 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  13. 2026-10-18 03:52 UTCEG score recompute
  14. 2026-10-16 16:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-10-15 16:31 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-10-14 16:32 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-10-13 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-10-12 16:33 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-10-12 16:19 UTCEG score recompute
  20. 2026-10-11 20:01 UTCEG score recompute
  21. 2026-10-11 17:14 UTCEG score recompute
  22. 2026-10-11 14:46 UTCEG score recompute
  23. 2026-10-11 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-10-10 20:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
Show 74 more
  1. 2026-10-08 17:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-07 23:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-04 23:21 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-03 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-01 19:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-09-30 15:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-09-28 13:51 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-09-26 15:58 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-09-26 00:26 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-09-25 15:26 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  11. 2026-09-25 14:53 UTCEG score recompute
  12. 2026-09-25 14:53 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  13. 2026-09-24 14:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-09-18 19:27 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  15. 2026-09-16 14:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-09-16 05:15 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-09-13 16:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-09-12 15:01 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-09-11 14:52 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-09-10 09:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  21. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  22. 2026-09-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-09-02 14:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  25. 2026-09-01 13:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  26. 2026-08-30 01:22 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  27. 2026-08-28 21:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  28. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  29. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  30. 2026-08-25 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  31. 2026-08-23 16:56 UTCEG score recompute
  32. 2026-08-23 16:56 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  33. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  34. 2026-08-21 22:55 UTCEG score recompute
  35. 2026-08-21 22:55 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  36. 2026-08-20 22:55 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  37. 2026-08-20 18:55 UTCEG score recompute
  38. 2026-08-20 18:55 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  39. 2026-08-19 17:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  40. 2026-08-18 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  41. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  42. 2026-08-17 09:54 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  43. 2026-08-16 03:30 UTCEG score recompute
  44. 2026-08-16 03:30 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  45. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  46. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  47. 2026-08-15 01:27 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  48. 2026-08-14 02:02 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  49. 2026-08-12 23:28 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  50. 2026-08-12 00:03 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  51. 2026-08-11 00:35 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  52. 2026-08-10 00:57 UTCEG score recompute
  53. 2026-08-10 00:57 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  54. 2026-08-09 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  55. 2026-08-09 01:32 UTCEG score recompute
  56. 2026-08-09 01:32 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  57. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  58. 2026-08-07 20:08 UTCEG score recompute
  59. 2026-08-07 20:08 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  60. 2026-08-06 20:43 UTCEG score recompute
  61. 2026-08-06 20:43 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  62. 2026-08-06 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-08-05 21:17 UTCEG score recompute
  64. 2026-08-05 21:17 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  65. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  66. 2026-08-04 15:10 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  67. 2026-08-03 16:54 UTCEG score recompute
  68. 2026-08-03 16:54 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  69. 2026-08-03 10:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  70. 2026-08-02 17:10 UTCEG score recompute
  71. 2026-08-02 17:10 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  72. 2026-08-02 02:26 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  73. 2026-08-01 17:44 UTCEG score recompute
  74. 2026-08-01 17:44 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4

Frequently asked(5)

What is CVE-2026-25602?
CVE-2026-25602 is a medium-severity vulnerability; its CVE record was published on May 20, 2026. Insufficient Verification of Data Authenticity in the feedback function of Mesalvo MEONA (MEONA Client and MEONA Server). The MEONA Client transmits the recipient address of a feedback report to the MEONA Server, and the server sends the report to the transmitted address instead of the address…
When was the CVE record for CVE-2026-25602 published?
The CVE record for CVE-2026-25602 was published on May 20, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 25, 2026; the record at its source may have been updated since.
Is CVE-2026-25602 actively exploited?
CVE-2026-25602 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-25602?
CVE-2026-25602 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-25602?
No fix for CVE-2026-25602 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (EU Agency for Cybersecurity (ENISA)) lists Mesalvo Meona Server versions 2025.04 up to but not including 2025.04.24 and 2026.03 up to but not including 2026.03.02; Mesalvo Meona Client versions 2025.04 up to but not including 2025.04.24 and 2026.03 up to but not including 2026.03.02 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-25602 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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