# activitypub\_federation (crates.io) vulnerabilities

2 known vulnerabilities (2 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 0.6.6 (Oct 1, 2026): affected by CVE-2026-33693
- Newest unaffected release: Every release is affected by at least one advisory
- Weekly downloads: 1,458
- Dependents: 0
- Releases: 67 since 0.1.0 (Jun 2, 2022)
- Registry: https://crates.io/crates/activitypub_federation
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-33693: 0.1.0 to 0.7.0-beta.8 (0.7.0-beta.9 is outside it)
- CVE-2025-25194: 0.1.0 to 0.6.2 (0.6.3 is outside it)

## Advisories (2)

### [CVE-2026-33693](https://cve.now/CVE-2026-33693): Lemmy's Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4\_is\_invalid()

- Severity: Medium 6.5
- Published: Mar 27, 2026
- Affected: fixed in 0.7.0-beta.9.
- Fixed in 0.7.0-beta.9 (released Mar 16, 2026, 11 days before disclosure).
- The latest release, 0.6.6, is still affected.

### [CVE-2025-25194](https://cve.now/CVE-2025-25194): Server-Side Request Forgery (SSRF) in activitypub\_federation

- Severity: Medium 4.0
- Published: Feb 10, 2025
- Affected: through 0.6.2.
- Fixed in 0.6.3 (released Mar 10, 2025, 28 days after disclosure), the first release outside every affected range (no listed fixed version clears them all).
- The latest release, 0.6.6, is not affected.

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