CVE-2026-53871

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

Published

June 17, 2026

Last Modified

September 17, 2026

Advisory Details (5)

Auto-updated Jun 17, 2026
Patch available. Sources: github_pr, github_release, github_commit.
generic

Hermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypass via Forged hermes_profile Cookie | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookie
github_release Patch Available

v0.51.368

Patch available: nesquena/hermes-webui v0.51.368

https://github.com/nesquena/hermes-webui/releases/tag/v0.51.368
github_pr Patch Available

Release MG — v0.51.368 — bind active-profile cookie to auth session (#4023, fixes #803)

Patch available: nesquena/hermes-webui v0.51.452 (PR #4036 merged 2026-06-12)

https://github.com/nesquena/hermes-webui/pull/4036
github_pr Patch Available

[security] fix(auth): bind active profile cookie to session

Patch available: nesquena/hermes-webui v0.51.452 (PR #4023 merged 2026-06-12)

https://github.com/nesquena/hermes-webui/pull/4023
github_commit Patch Available

commit 9e96f5f6adf9 (nesquena/hermes-webui)

Patch available: nesquena/hermes-webui v0.51.452 (contains commit 9e96f5f6adf9)

https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3b

Vendor Advisories for CVE-2026-53871(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 8× in last 7d / 32× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 275 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-53871?
CVE-2026-53871 is a high vulnerability published on June 17, 2026. Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the getprofilecookie() function that accepts unauthenticated profile names from the hermesprofile cookie. An authenticated attacker can forge the hermesprofile cookie value to bypass profile-scoped authorization checks…
When was CVE-2026-53871 disclosed?
CVE-2026-53871 was first published on June 17, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53871 actively exploited?
CVE-2026-53871 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53871?
CVE-2026-53871 has a CVSS base score of 8.1 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-53871?
A fix for CVE-2026-53871 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53871 are linked in the Vendor Advisories panel on this page.

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