CVE-2026-17432

MEDIUMPre-NVD 5.05.0—
EchelonGraph scoreHIGH 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 — 5 sources updated this week
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: None knownExposed: 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(high)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

July 26, 2026

Last Modified

July 26, 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 8× in last 7d / 8× 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.

  1. 2026-07-27 02:30 UTCEG score recompute
  2. 2026-07-27 02:30 UTCGHSA enrichment
  3. 2026-07-26 14:54 UTCEPSS rescore
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 02:45 UTCEG score recompute
  6. 2026-07-26 01:24 UTCNVD updateCVSS v4 → 1.3
  7. 2026-07-26 01:00 UTCEG score recompute
  8. 2026-07-26 00:59 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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. 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 86.0% 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.

Dependency Blast Radius

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