CVE-2026-86544CWE-863broken-access-control

CVE-2026-86544

High · published September 8, 2026

CVSS v3.1
8.1
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
7.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00585 · 47.2th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-08T03:16Z
References (6)
https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/guard.go#L44-L60 · [email protected]https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/registry.go#L99-L140 · [email protected]https://github.com/knowns-dev/knowns/commit/a2c98fc5c313463576c9348beeec6a74ddd7333b · [email protected]https://github.com/knowns-dev/knowns/releases/tag/v0.30.0 · [email protected]https://github.com/knowns-dev/knowns/security/advisories/GHSA-w323-3wpx-f7g5 · [email protected]https://www.vulncheck.com/advisories/knowns-before-0.30.0-authorization-bypass-via-misclassified-code-actions · [email protected]
EPSS history
Timeline
  • 09 SEP 03:20Z
    EPSS moved — → 0%
    epss
  • 07 SEP 23:03Z
    knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions
    cvelistv5