CVE-2026-71246 Pixelfed - Authenticated SSRF via Remote URL Search
Authenticated attackers can exploit insufficient URL validation in Pixelfed's remote search to access internal network resources and cloud metadata.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71246?
CVE-2026-71246 is a medium-severity server-side request forgery vulnerability in pixelfed, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Pixelfed's SearchController (behind the auth middleware) accepts a URL via its remote-search parameters and fetches it server-side through ActivityPubFetchService, whose validateUrl only blocks the literal hosts 127.0.0.1, localhost, and ::1 and requires https, without checking the resolved IP against private, internal, or link-local ranges (e.g. 169.254.169.254).
Weakness: CWE-918
Which versions are affected by CVE-2026-71246?
How do I fix CVE-2026-71246?
No fix has been published for CVE-2026-71246 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-71246 being exploited?
There is no known exploitation of CVE-2026-71246 in the wild and no public exploit code.
Sources
Also known as GHSA-5cfc-gvxj-5r55.