CVE-2026-111664
CVE-2026-111664 · Safing Portmaster before 2.2.5 Unauthenticated Forced Downgrade via /api/v1/updates/from-url
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Safing Portmaster before 2.2.5 contains a missing authorization vulnerability that allows unprivileged local processes to force updates by calling the POST /api/v1/updates/from-url endpoint registered with api.PermitAnyone. Attackers can supply an attacker-controlled index URL that bypasses version checks and auto-apply settings, installing older Safing-signed releases carrying previously fixed vulnerabilities.
CVSS 4.8 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Affected products and versions
portmaster
- Versions
- ≥ 0, < 2.2.5: Affected (custom)
Update to 2.2.5
Original sources
- https://github.com/safing/portmaster/issues/2292
- https://github.com/safing/portmaster/blob/v2.2.3/service/core/api.go#L145-L159
- https://github.com/safing/portmaster/commit/f943e1eaf98f45bc48490bf288e1d63c04929ae0
- https://github.com/safing/portmaster/releases/tag/v2.2.5
- https://www.vulncheck.com/advisories/safing-portmaster-before-2.2.5-unauthenticated-forced-downgrade-via-api-v1-updates-from-url
- https://nvd.nist.gov/vuln/detail/CVE-2026-111664