CVE-2026-6832

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-04-22. 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%CVSS: 8.1Exploit: None knownExposed: 0

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

Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

April 21, 2026

Last Modified

July 14, 2026

Advisory Details (6)

Auto-updated Jun 4, 2026
Patch available. Sources: github_commit, github_pr, github_release.
generic

Nesquena Hermes WebUI < v0.50.32 Arbitrary File Deletion via Unvalidated session_id | Advisories | VulnCheck

https://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-file-deletion-via-unvalidated-session-id
github_release Patch Available

v0.50.32

Patch available: nesquena/hermes-webui v0.50.32

https://github.com/nesquena/hermes-webui/releases/tag/v0.50.32
github_release Patch Available

v0.50.132

Patch available: nesquena/hermes-webui v0.50.132

https://github.com/nesquena/hermes-webui/releases/tag/v0.50.132
github_pr Patch Available

[security] fix(sessions): validate session_id before deleting session files (#409)

Patch available: nesquena/hermes-webui v0.51.219 (PR #412 merged 2026-04-14)

https://github.com/nesquena/hermes-webui/pull/412
github_pr

[security] fix(sessions): validate session_id before deleting session files

Upstream fix in progress (PR #409 · nesquena/hermes-webui, state=closed)

https://github.com/nesquena/hermes-webui/pull/409
github_commit Patch Available

commit 3cc5839bf303 (nesquena/hermes-webui)

Patch available: nesquena/hermes-webui v0.51.219 (contains commit 3cc5839bf303)

https://github.com/nesquena/hermes-webui/commit/3cc5839bf303fa6758bfdac538507407a2929655

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 27× 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 186 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-6832?
CVE-2026-6832 is a high vulnerability published on April 21, 2026. Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the sessionid parameter. Attackers can exploit unvalidated…
When was CVE-2026-6832 disclosed?
CVE-2026-6832 was first published in the National Vulnerability Database on April 21, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6832 actively exploited?
CVE-2026-6832 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 60.3% of all scored CVEs.
What is the CVSS score of CVE-2026-6832?
CVE-2026-6832 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-6832?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6832, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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