CVE-2026-49956

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-09. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Hermes WebUI before version 0.51.269 contains a profile isolation bypass vulnerability that allows authenticated users to access data belonging to other profiles by querying the session search endpoint without active-profile filtering. Attackers can send requests to the sessions search handler to retrieve session titles and transcript message content from profiles other than their own active profile.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

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
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (5)

Auto-updated Jun 12, 2026
Patch available. Sources: github_commit, github_pr, github_release.
github_pr

fix: scope session search to active profile

Upstream fix in progress (PR #3646 · nesquena/hermes-webui, state=closed)

https://github.com/nesquena/hermes-webui/pull/3646
generic

Hermes WebUI < 0.51.269 Profile Isolation Bypass via sessions search | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hermes-webui-profile-isolation-bypass-via-sessions-search
github_release Patch Available

v0.51.269

Patch available: nesquena/hermes-webui v0.51.269

https://github.com/nesquena/hermes-webui/releases/tag/v0.51.269
github_pr Patch Available

Release v0.51.269 — Release IK (stage-b2 — sidebar perf + search scope + Windows ctl)

Patch available: nesquena/hermes-webui v0.51.340 (PR #3672 merged 2026-06-05)

https://github.com/nesquena/hermes-webui/pull/3672
github_commit Patch Available

commit 2c7b530071bb (nesquena/hermes-webui)

Patch available: nesquena/hermes-webui v0.51.340 (contains commit 2c7b530071bb)

https://github.com/nesquena/hermes-webui/commit/2c7b530071bb29ae4184e83e33be5799d529568e

Vendor Advisories for CVE-2026-49956(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 6× in last 7d / 22× 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 203 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-49956?
CVE-2026-49956 is a medium vulnerability published on June 9, 2026. Hermes WebUI before version 0.51.269 contains a profile isolation bypass vulnerability that allows authenticated users to access data belonging to other profiles by querying the session search endpoint without active-profile filtering. Attackers can send requests to the sessions search handler to…
When was CVE-2026-49956 disclosed?
CVE-2026-49956 was first published on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49956 actively exploited?
CVE-2026-49956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-49956?
CVE-2026-49956 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-49956?
A fix for CVE-2026-49956 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-49956 are linked in the Vendor Advisories panel on this page.

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