Vulnerability · Published Sep 10, 2026 · Assigned by VulnCheck
CVE-2026-88939knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
High 8.3
In plain English
A high-severity incorrect authorization in knowns from knowns-dev. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.5%top 58.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| knowns-dev | knowns | 0 – through 0.33.0 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
References
- GitHub Security Advisory (GHSA-h73x-698r-qrvg) vendor-advisory
- https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/permissions/guard.go#L104-L113 technical-description
- https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/permissions/registry.go#L51-L54 technical-description
- VulnCheck Advisory: knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption third-party-advisory