CVE-2026-22677

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-05-13. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Hermes WebUI prior to 0.51.44 contains a path traversal vulnerability in the session import endpoint that allows authenticated attackers to read arbitrary files by importing a crafted session with an unrestricted workspace value. Attackers can supply a blocked filesystem root in the workspace field and subsequently use relative paths in the session file API to access any file readable by the WebUI process.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

May 13, 2026

Last Modified

July 14, 2026

Advisory Details (4)

Auto-updated May 14, 2026
No patch confirmed yet.
generic

[security] fix(session): validate workspace on import by Hinotoi-agent · Pull Request #2048 · nesquena/hermes-webui · GitHub

https://github.com/nesquena/hermes-webui/pull/2048
generic

Hermes WebUI < 0.51.44 - Release T Path Traversal via Session Import Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hermes-webui-path-traversal-via-session-import-endpoint
generic

Release v0.51.44 — Release T (5-PR batch + hermetic test network isolation) · nesquena/hermes-webui · GitHub

https://github.com/nesquena/hermes-webui/releases/tag/v0.51.44
generic

Merge pull request #2058 from nesquena/stage-337 · nesquena/hermes-webui@f00cb74 · GitHub

https://github.com/nesquena/hermes-webui/commit/f00cb74f776f22f02f5eb6b39dfb389f87cc7fd3

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× 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 222 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-22677?
CVE-2026-22677 is a medium vulnerability published on May 13, 2026. Hermes WebUI prior to 0.51.44 contains a path traversal vulnerability in the session import endpoint that allows authenticated attackers to read arbitrary files by importing a crafted session with an unrestricted workspace value. Attackers can supply a blocked filesystem root in the workspace field…
When was CVE-2026-22677 disclosed?
CVE-2026-22677 was first published in the National Vulnerability Database on May 13, 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-2026-22677 actively exploited?
CVE-2026-22677 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 69.0% of all scored CVEs.
What is the CVSS score of CVE-2026-22677?
CVE-2026-22677 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-22677?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22677, 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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