CVE-2026-48081

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (15th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-54154 (ENISA EUVD)Source: ENISA EUVD

8.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.1Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, a TENANT_ADMIN can store javascript: URLs in the tenant links configuration (website, imprint, privacyStatement). These values are returned to the patient-facing landing page via /api/public, hydrated into the SvelteKit Button component, and rendered as `` elements without URL-scheme filtering. A patient who clicks any such link executes the attacker's JavaScript inside the patient browser origin, where patient form data is read before client-side encryption is applied. This breaks the project's central trust claim that the server is an untrusted relay and that administrators cannot read patient data. Patient-side encryption happens after form input, so JavaScript executing in the patient origin can read or alter the plaintext before encryption is performed. Version 1.0.2 fixes the issue.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
52
EG Risk 52/100

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)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.2%
EPSS %ILE
15th
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 (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). 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, Track* at medium and Attend at high mission impact.CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (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 6, 2026

Last Modified

October 23, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

stored click-triggered XSS via javascript: tenant links rendered into patient-facing footer · Advisory · open-reception/appointment-booking-software · GitHub

https://github.com/open-reception/appointment-booking-software/security/advisories/GHSA-xpr7-wx69-mp36
GitHub commit Patch Available

commit 98a107d4b4ea (open-reception/appointment-booking-software)

Patch available: open-reception/appointment-booking-software v1.0.2 (contains commit 98a107d4b4ea)

https://github.com/open-reception/appointment-booking-software/commit/98a107d4b4eaeab5cbb96ee0a28c2342b853eee0

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 41× 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 139 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 39 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  3. 2026-10-31 01:18 UTCEG score recompute
  4. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  5. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  8. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  9. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  10. 2026-10-25 14:23 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-23 21:27 UTCEG score recompute
  13. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  18. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-10-18 03:35 UTCEG score recompute
  20. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-10-17 12:31 UTCEG score recompute
  22. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
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  1. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-10-12 16:01 UTCEG score recompute
  3. 2026-10-11 19:44 UTCEG score recompute
  4. 2026-10-11 16:58 UTCEG score recompute
  5. 2026-10-11 14:23 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  7. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  8. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-06 23:22 UTCEG score recompute
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-05 18:35 UTCEG score recompute
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-04 05:47 UTCEG score recompute
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  18. 2026-10-03 01:02 UTCEG score recompute
  19. 2026-10-02 09:36 UTCEG score recompute
  20. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-09-30 22:59 UTCEG score recompute
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-09-29 05:51 UTCEG score recompute
  24. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-09-27 17:27 UTCEG score recompute
  26. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  27. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  28. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  29. 2026-09-25 04:19 UTCEG score recompute
  30. 2026-09-23 22:38 UTCEG score recompute
  31. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  32. 2026-09-23 00:08 UTCEG score recompute
  33. 2026-09-22 00:55 UTCEG score recompute
  34. 2026-09-20 20:34 UTCEG score recompute
  35. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  36. 2026-09-20 00:14 UTCEG score recompute
  37. 2026-09-19 01:09 UTCEG score recompute
  38. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  39. 2026-09-18 02:28 UTCEG score recompute
  40. 2026-09-17 00:56 UTCEG score recompute
  41. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  42. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  43. 2026-09-15 14:21 UTCEG score recompute
  44. 2026-09-13 22:43 UTCEG score recompute
  45. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  46. 2026-09-13 00:13 UTCEG score recompute
  47. 2026-09-12 01:44 UTCEG score recompute
  48. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-09-11 14:29 UTCEG score recompute
  50. 2026-09-10 13:24 UTCEG score recompute
  51. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  52. 2026-09-09 08:35 UTCEG score recompute
  53. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  54. 2026-09-07 17:49 UTCEG score recompute
  55. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  56. 2026-09-06 14:47 UTCEG score recompute
  57. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  58. 2026-09-05 16:16 UTCEG score recompute
  59. 2026-09-05 03:25 UTCEG score recompute
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  61. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  62. 2026-09-03 06:11 UTCEG score recompute
  63. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-09-01 17:42 UTCEG score recompute
  65. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  66. 2026-08-30 20:59 UTCEG score recompute
  67. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  68. 2026-08-30 09:43 UTCEG score recompute
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  70. 2026-08-29 10:28 UTCEG score recompute
  71. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  72. 2026-08-27 19:55 UTCEG score recompute
  73. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  74. 2026-08-26 21:26 UTCEG score recompute
  75. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile

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Frequently asked(5)

What is CVE-2026-48081?
CVE-2026-48081 is a high-severity vulnerability; its CVE record was published on August 6, 2026. OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.2, a TENANT_ADMIN can store javascript: URLs in the tenant links configuration (website, imprint, privacyStatement). These values are returned to the patient-facing…
When was the CVE record for CVE-2026-48081 published?
The CVE record for CVE-2026-48081 was published on August 6, 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 October 23, 2026; the record at its source may have been updated since.
Is CVE-2026-48081 actively exploited?
CVE-2026-48081 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-48081?
CVE-2026-48081 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-48081?
A fix for CVE-2026-48081 is available: update to the fixed version the vendor names in its advisory.

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