CVE-2026-15331

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-07-10. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

A vulnerability was identified in zhayujie CowAgent up to 2.1.0. The affected element is the function _add_url/_add_package of the file agent/skills/service.py of the component Skill Installation Handler. The manipulation of the argument Name leads to path traversal. The attack may be initiated remotely. Upgrading to version 2.1.2 is sufficient to fix this issue. The identifier of the patch is e85290cddcbb5ffc9c235927f4c92e5b4c3ec264. It is advisable to upgrade the affected component.

CVSS v3
5.4
EG Score
5.4(high)
EPSS
30.0%
KEV
Not listed

Published

July 10, 2026

Last Modified

July 10, 2026

Advisory Details (5)

Auto-updated Jul 10, 2026
Patch available. Sources: github_commit, github_pr, github_release.
github_release Patch Available

2.1.2

Patch available: zhayujie/CowAgent 2.1.2

https://github.com/zhayujie/CowAgent/releases/tag/2.1.2
github_pr Patch Available

fix(security): SSRF protection for vision tool + path traversal guard for skill install

Patch available: zhayujie/CowAgent 2.1.2 (PR #2886 merged 2026-06-11)

https://github.com/zhayujie/CowAgent/pull/2886
generic

[Security] Authenticated cloud skill installation path traversal writes files outside the intended `skills/` root · Issue #2873 · zhayujie/CowAgent · GitHub

https://github.com/zhayujie/CowAgent/issues/2873
github_commit Patch Available

commit e85290cddcbb (zhayujie/CowAgent)

Patch available: zhayujie/CowAgent 2.1.2 (contains commit e85290cddcbb)

https://github.com/zhayujie/CowAgent/commit/e85290cddcbb5ffc9c235927f4c92e5b4c3ec264
generic

GitHub - zhayujie/CowAgent: Open-source super AI assistant & Agent Harness. Plans tasks, runs tools and skills, self-evolves with memory and knowledge. Multi-model, multi-channel. Lightweight, extensible, one-line install. (formerly chatgpt-on-wechat) · GitHub

https://github.com/zhayujie/CowAgent/

Vendor Advisories for CVE-2026-15331(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 18× in last 7d / 18× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 04:13 UTCEG score recompute
  3. 2026-07-15 04:13 UTCGHSA enrichment
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 04:26 UTCEG score recompute
  6. 2026-07-14 04:26 UTCGHSA enrichment
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 06:12 UTCEPSS rescore
  9. 2026-07-13 04:36 UTCEG score recompute
  10. 2026-07-13 04:36 UTCGHSA enrichment
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-12 04:49 UTCEG score recompute
  13. 2026-07-12 04:49 UTCGHSA enrichment
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-11 05:02 UTCEG score recompute
  16. 2026-07-11 05:02 UTCGHSA enrichment
  17. 2026-07-10 05:15 UTCEG score recompute
  18. 2026-07-10 05:13 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15331?
CVE-2026-15331 is a medium vulnerability published on July 10, 2026. A vulnerability was identified in zhayujie CowAgent up to 2.1.0. The affected element is the function addurl/addpackage of the file agent/skills/service.py of the component Skill Installation Handler. The manipulation of the argument Name leads to path traversal. The attack may be initiated…
When was CVE-2026-15331 disclosed?
CVE-2026-15331 was first published in the National Vulnerability Database on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15331 actively exploited?
CVE-2026-15331 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15331?
CVE-2026-15331 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-15331?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15331, 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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