Vulnerability details
CVE-2026-88939
knowns-dev knowns
knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
CVSS 4.0
8.7High
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N |
| 8.3High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| knowns-dev | knowns | v ≤ 0.33.0 | CVEProject cvelistV5 (CNA) |
References and advisories
4- 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
- https://www.vulncheck.com/advisories/knowns-through-0.33.0-authorization-bypass-via-project-set-bootstrap-exemption third-party-advisory
- https://github.com/knowns-dev/knowns/security/advisories/GHSA-h73x-698r-qrvg vendor-advisory
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Details
- Published
- 2026-09-10
- Last updated
- 2026-09-15
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.47%
Probability of exploitation in 30 days
41.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-863Incorrect Authorization