{"id":"CVE-2026-86544","title":"knowns versions before 0.30.0 contain an authorization bypass vulnerability where mutating code actions are incorrectly classified as read-only operations","summary":"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 permis…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-863"],"vendor":"knowns-dev","product":"knowns","affected":["knowns < 0.30.0"],"published":"2026-09-07","updated":"2026-09-09","sourceUpdated":"2026-09-09T15:17:18.617","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86544","references":[{"url":"https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/guard.go#L44-L60","label":"disclosure@vulncheck.com"},{"url":"https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/registry.go#L99-L140","label":"disclosure@vulncheck.com"},{"url":"https://github.com/knowns-dev/knowns/commit/a2c98fc5c313463576c9348beeec6a74ddd7333b","label":"disclosure@vulncheck.com"},{"url":"https://github.com/knowns-dev/knowns/releases/tag/v0.30.0","label":"disclosure@vulncheck.com"},{"url":"https://github.com/knowns-dev/knowns/security/advisories/GHSA-w323-3wpx-f7g5","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/knowns-before-0.30.0-authorization-bypass-via-misclassified-code-actions","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-09T14:53:12.549589Z"},"epss":0.00585,"epssPercentile":0.45673,"ingestedAt":"2026-09-08T15:33:26.981Z","slug":"CVE-2026-86544","body":"## Overview\n\nknowns 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}