CVE-2026-75006

MEDIUMPre-NVD 5.85.8
EchelonGraph scoreMEDIUM confidence

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

Score 5.8 from GitHub Security Advisory published 2026-08-17. A secondary CVSS source baseline 5.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-60171 (ENISA EUVD) · GHSA-vf28-qp34-hhm8 (GitHub Security Advisories)Source: ENISA EUVD

5.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. This issue exists because of insufficient fixes for CVE-2026-35540, CVE-2026-48843 and CVE-2026-62643.

CVSS v3
5.8
EG Score
5.8MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

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)
Severity58% × 45%
Impact severity (EG Severity): CVSS 5.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
35th
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 (5.8): severity, escalated by confirmed exploitation. This CVE's 5.8 is its impact severity (EG Severity), not escalated.

EG Severity
5.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.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 low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

August 17, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Aug 17, 2026
Patch available. Sources: github_commit.
Web page

Security updates 1.6.18 and 1.7.3 released

https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3
GitHub commit

commit c111b72950cd (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit c111b72950cd — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/c111b72950cd2bf57d6b86cd129568d90403322d
GitHub commit

commit 92f85c883594 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 92f85c883594 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/92f85c883594e5be757154f94548a9ba903455c9
GitHub commit

commit 8a92380b06b5 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 8a92380b06b5 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/8a92380b06b5df1481e034c4f40d6a6546c21223
GitHub commit

commit 7e10ca0110b7 (roundcube/roundcubemail)

Fix landed in roundcube/roundcubemail commit 7e10ca0110b7 — awaiting tagged release

https://github.com/roundcube/roundcubemail/commit/7e10ca0110b7c9aa1b7850b843bb6625e47bbe00

Vendor Advisories for CVE-2026-75006(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.1+dfsg-1 ... 1.6.5+dfsg-1~deb12u1 (18 versions)
  • every version up to 1.6.5+dfsg-1+deb12u11: fixed in 1.6.5+dfsg-1+deb12u11
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.11+dfsg-1 ... 1.6.17+dfsg-1 (12 versions)
  • every version up to 1.6.18+dfsg-0+deb13u1: fixed in 1.6.18+dfsg-0+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
roundcube1.6.11+dfsg-1 ... 1.6.17+dfsg-1 (7 versions)
  • every version up to 1.6.18+dfsg-1: fixed in 1.6.18+dfsg-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 44× 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 100 of 179 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. None are among the latest 100 rows. The 79 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  4. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  5. 2026-10-30 06:25 UTCOSV refresh
  6. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  7. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  10. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-25 14:03 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-22 18:57 UTCEG score recompute
  15. 2026-10-22 18:57 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  16. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-10-18 03:13 UTCEG score recompute
  22. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  23. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  24. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  25. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
Show 75 more
  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-10-12 15:39 UTCEG score recompute
  4. 2026-10-11 19:25 UTCEG score recompute
  5. 2026-10-11 16:41 UTCEG score recompute
  6. 2026-10-11 14:00 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-07 08:51 UTCEG score recompute
  13. 2026-10-07 08:51 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  14. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-06 09:03 UTCEG score recompute
  16. 2026-10-06 09:03 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  19. 2026-10-04 21:50 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  20. 2026-10-03 17:50 UTCEG score recompute
  21. 2026-10-03 17:49 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  23. 2026-10-02 08:35 UTCEG score recompute
  24. 2026-10-02 08:35 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  26. 2026-10-01 09:19 UTCEG score recompute
  27. 2026-10-01 09:19 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  28. 2026-09-30 10:03 UTCEG score recompute
  29. 2026-09-30 10:03 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  30. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  31. 2026-09-29 06:49 UTCEG score recompute
  32. 2026-09-29 06:49 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  33. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  34. 2026-09-28 07:33 UTCEG score recompute
  35. 2026-09-28 07:33 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  36. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  37. 2026-09-27 08:17 UTCEG score recompute
  38. 2026-09-27 08:17 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  39. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 44th percentile
  40. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  41. 2026-09-25 11:50 UTCEG score recompute
  42. 2026-09-25 11:50 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  43. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 43rd percentile
  44. 2026-09-24 11:45 UTCEG score recompute
  45. 2026-09-24 11:45 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  46. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  47. 2026-09-23 12:29 UTCEG score recompute
  48. 2026-09-23 12:29 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  49. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  50. 2026-09-22 13:12 UTCEG score recompute
  51. 2026-09-22 13:12 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  52. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  53. 2026-09-21 13:55 UTCEG score recompute
  54. 2026-09-21 13:55 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  55. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  56. 2026-09-20 14:15 UTCEG score recompute
  57. 2026-09-20 14:15 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  58. 2026-09-19 13:43 UTCEG score recompute
  59. 2026-09-19 13:43 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  60. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  61. 2026-09-18 14:27 UTCEG score recompute
  62. 2026-09-18 14:27 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  63. 2026-09-17 14:51 UTCEG score recompute
  64. 2026-09-17 14:51 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  65. 2026-09-16 15:17 UTCEG score recompute
  66. 2026-09-16 15:17 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  67. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  68. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  69. 2026-09-15 15:19 UTCEG score recompute
  70. 2026-09-15 15:19 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  71. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  72. 2026-09-14 15:44 UTCEG score recompute
  73. 2026-09-14 15:44 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  74. 2026-09-13 16:28 UTCGHSA enrichmentGHSA-vf28-qp34-hhm8 · GitHub CVSS 5.8
  75. 2026-09-12 17:12 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-75006?
CVE-2026-75006 is a medium-severity vulnerability; its CVE record was published on August 17, 2026. In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. This issue exists because of insufficient fixes for…
When was the CVE record for CVE-2026-75006 published?
The CVE record for CVE-2026-75006 was published on August 17, 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 8, 2026; the record at its source may have been updated since.
Is CVE-2026-75006 actively exploited?
CVE-2026-75006 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75006?
CVE-2026-75006 has a CVSS base score of 5.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75006?
A fix for CVE-2026-75006 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75006 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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