- 5.3MediumCVSS base score
- 0.45%Exploitation in 30 daysEPSS · top 61% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
References tagged exploit1 reference
- https://github.com/zhayujie/CowAgent/issues/2873 (opens in a new tab)issue-trackingexploit
Timeline
ID reserved
By VulDB
- 1 day later
· 1 day later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X |
| VulDBCNA (assigner) | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C |
| VulDBCNA (assigner) | 3.0 | Medium5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C |
| VulDBCNA (assigner) | 2.0 | Medium5.5 | AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C |
| NVDNVD · Deferred | 4.0 | Medium5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.45% · top 61% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
References
9
- VDB-377274 | zhayujie CowAgent Skill Installation service.py _add_package path traversal (opens in a new tab)vdb-entrytechnical-description
- VDB-377274 | CTI Indicators (IOB, IOC, TTP, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-15331 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #853104 | zhayujie CowAgent <= 2.1.0 Improper Limitation of a Pathname to a Restricted Directory (CWE-22) (opens in a new tab)third-party-advisory
- https://github.com/zhayujie/CowAgent/issues/2873 (opens in a new tab)issue-trackingexploit
- https://github.com/zhayujie/CowAgent/pull/2886 (opens in a new tab)issue-trackingpatch
- https://github.com/zhayujie/CowAgent/commit/e85290cddcbb5ffc9c235927f4c92e5b4c3ec264 (opens in a new tab)patch
- https://github.com/zhayujie/CowAgent/releases/tag/2.1.2 (opens in a new tab)patch
- https://github.com/zhayujie/CowAgent/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-42789 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-15331)Record last updated .