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High severity · published Sep 7, 2026
CVE-2026-86544
knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions
8.1
CVSS
0.6%
EPSS
No
On KEV
Description
knowns versions before 0.30.0 contain an authorization bypass vulnerability where mutating code actions are incorrectly classified as read-only operations. Attackers with read-restricted sessions can exploit code.replace to modify permission configurations and escalate privileges on subsequent calls.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KN
knowns · knowns-dev
before 0.30.0 · source: vendor
Affected product
KN
knowns
knowns-dev
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86544
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86544
github.com
https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/guard.go#L44-L60
github.com
https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/registry.go#L99-L140
github.com
https://github.com/knowns-dev/knowns/commit/a2c98fc5c313463576c9348beeec6a74ddd7333b
github.com
https://github.com/knowns-dev/knowns/releases/tag/v0.30.0
github.com
https://github.com/knowns-dev/knowns/security/advisories/GHSA-w323-3wpx-f7g5
www.vulncheck.com
https://www.vulncheck.com/advisories/knowns-before-0.30.0-authorization-bypass-via-misclassified-code-actions
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