Vulnerability · Published Sep 7, 2026 · Assigned by VulnCheck
CVE-2026-86544knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions
High 8.1
In plain English
A high-severity incorrect authorization in knowns from knowns-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.6%top 51.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| knowns-dev | knowns | 0 – before 0.30.0 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
- GitHub Security Advisory (GHSA-w323-3wpx-f7g5) vendor-advisory
- ActionRegistry omits the mutating code actions; ClassifyAction falls back to CapRead (v0.29.1) technical-description
- Guard middleware gates on that classification (v0.29.1) technical-description
- knowns fix commit a2c98fc5c313 patch
- knowns v0.30.0 Release Notes release-notes
- VulnCheck Advisory: knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions third-party-advisory