CVE-2026-15331

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 38.4% of scored records. A rank, not a probability.

NVD base score

5.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-25.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-07-10 04:15Z3 MO AGO

Last updated

2026-07-10 14:26Z3 MO AGO

Reserved

2026-07-09

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base

Data version

5.2

Document digest

d4f23ee9be088e32395b8ebd8eb217c015bbc7cf1c8b7446f8462483bea98bfd

• vuldb.comVDB-377274 | zhayujie CowAgent Skill Installation service.py _add_package path traversalhttps://vuldb.com/vuln/377274vdb-entrytechnical-description
• vuldb.comVDB-377274 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/377274/ctisignaturepermissions-required
• vuldb.comCVE-2026-15331 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-15331third-party-advisory
• vuldb.comSubmit #853104 | zhayujie CowAgent <= 2.1.0 Improper Limitation of a Pathname to a Restricted Directory (CWE-22)https://vuldb.com/submit/853104third-party-advisory
• github.comhttps://github.com/zhayujie/CowAgent/issues/2873issue-tracking
• github.comhttps://github.com/zhayujie/CowAgent/pull/2886issue-trackingpatch
• github.comhttps://github.com/zhayujie/CowAgent/commit/e85290cddcbb5ffc9c235927f4c92e5b4c3ec264patch
• github.comhttps://github.com/zhayujie/CowAgent/releases/tag/2.1.2patch
• github.comhttps://github.com/zhayujie/CowAgent/product