Auth bypass in Knowns-Dev Knowns
CVE-2026-88939
knowns through 0.33.0 exempts the project.set action from permission guard checks unconditionally, allowing read-only agent sessions to bypass restrictions. Attackers can invoke project.set to repoint the server at another project directory and obtain write access capabilities.
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-88939?
- CVE-2026-88939 is a high-severity vulnerability in Knowns-Dev Knowns, classified under Incorrect Authorization. CVSS score: 8.3/10. Published 2026-09-10.
- How severe is CVE-2026-88939?
- High severity. CVSS v3 base score is 8.3 out of 10.