CVE-2026-29178
Lemmy: Unauthenticated SSRF via file_type query parameter injection in image endpoint
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | lemmynet |
| Product | lemmy |
| Published | Mar 6, 2026 |
| Last Updated | Mar 6, 2026 |
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Affected Versions
LemmyNet / lemmy
< 0.19.16