CVE-2026-17432

MEDIUMPre-NVD 5.05.0—
EchelonGraph scoreMEDIUM confidence

Score 5.0 from GitHub Security Advisory (severity: LOW) published 2026-07-26. a secondary CVSS source baseline 5.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.0Exploit: Elevated riskExposed: 0

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

A vulnerability was detected in NousResearch hermes-agent 2026.6.5. Affected by this vulnerability is an unknown functionality of the file hermes-agent/plugins/platforms/simplex/adapter.py of the component SimpleX Gateway Authorization. The manipulation of the argument contactId results in improper access controls. The attack may be launched remotely. A high complexity level is associated with this attack. The exploitation appears to be difficult. The exploit is now public and may be used. The patch is identified as 490c486ff65b766d9de0fe0e6f26e1778aaa8fb3. Applying a patch is advised to resolve this issue.

CVSS v3
5.0
EG Score
5.0(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity50% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

July 26, 2026

Last Modified

July 27, 2026

Advisory Details (5)

Auto-updated Jul 26, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
github_pr

fix(gateway): match SimpleX allowlist on local alias, not spoofable profile name

Upstream fix in progress (PR #41246 · NousResearch/hermes-agent, state=open)

https://github.com/NousResearch/hermes-agent/pull/41246
generic

[Security] Hermes SimpleX gateway allowlist authorization bypass via colliding contact display name · Issue #44730 · NousResearch/hermes-agent · GitHub

https://github.com/NousResearch/hermes-agent/issues/44730
generic

[Security] Hermes SimpleX sender allowlist can be bypassed via colliding display name on upstream main · Issue #44729 · NousResearch/hermes-agent · GitHub

https://github.com/NousResearch/hermes-agent/issues/44729
github_commit

commit 490c486ff65b (NousResearch/hermes-agent)

Fix landed in NousResearch/hermes-agent commit 490c486ff65b — awaiting tagged release

https://github.com/NousResearch/hermes-agent/commit/490c486ff65b766d9de0fe0e6f26e1778aaa8fb3
generic

GitHub - NousResearch/hermes-agent: The agent that grows with you · GitHub

https://github.com/NousResearch/hermes-agent/

Vendor Advisories for CVE-2026-17432(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 67× 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 136 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-17432?
CVE-2026-17432 is a medium vulnerability published on July 26, 2026. A vulnerability was detected in NousResearch hermes-agent 2026.6.5. Affected by this vulnerability is an unknown functionality of the file hermes-agent/plugins/platforms/simplex/adapter.py of the component SimpleX Gateway Authorization. The manipulation of the argument contactId results in improper…
When was CVE-2026-17432 disclosed?
CVE-2026-17432 was first published in the National Vulnerability Database on July 26, 2026, with the most recent update on July 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17432 actively exploited?
CVE-2026-17432 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 86.1% of all scored CVEs.
What is the CVSS score of CVE-2026-17432?
CVE-2026-17432 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2026-17432?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17432, 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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