CVE-2026-29178
Lemmy, a link aggregator and forum for the fediverse, is vulnerable to server-side request forgery via a dependency on activitypub_federation, a framework for ActivityPub federation in Rust. Prior to version 0.19.16, the GET /api/v4/image/{filename} endpoint is vulnerable to unauthenticated SSRF through parameter injection in the file_type query parameter. An attacker can inject arbitrary query parameters into the internal request to pict-rs, including the proxy parameter which causes pict-rs to fetch arbitrary URLs. This issue has been patched in version 0.19.16.
- Fix
- Available
- CVSS 4.0
- 8.7 HIGH
- EPSS
- 0.3% (19th percentile)
- Weakness
- CWE-918
- NVD status
- Deferred
- Published
- 2026-03-06
No indexed exploits for CVE-2026-29178 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-29178 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.