High severity · published Sep 10, 2026
CVE-2026-88939
knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
8.3
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KN
knowns · knowns-dev
through 0.33.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88939
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88939
github.com
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/permissions/guard.go#L104-L113
github.com
https://github.com/knowns-dev/knowns/blob/v0.33.0/internal/permissions/registry.go#L51-L54
github.com
https://github.com/knowns-dev/knowns/security/advisories/GHSA-h73x-698r-qrvg
www.vulncheck.com
https://www.vulncheck.com/advisories/knowns-through-0.33.0-authorization-bypass-via-project-set-bootstrap-exemption
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