CVE-2026-33693

crates.io/activitypub_federation CVE-2026-33693: medium 6.5, EPSS 0.38%

Activitypub-Federation has SSRF via 0.0.0.0 bypass in activitypub-federation-rust v4_is_invalid()

Action: Upgrade activitypub_federation to 0.7.0-beta.9 or later.

cargo update -p activitypub_federation --precise 0.7.0-beta.9

Affected

Fixed versions

Sources

• osv: GHSA-q537-8fr5-cw35
• https://github.com/LemmyNet/lemmy/security/advisories/GHSA-q537-8fr5-cw35
• https://nvd.nist.gov/vuln/detail/CVE-2026-33693
• https://github.com/LemmyNet/activitypub-federation-rust/commit/4ae8532b17bc35755240b7f55d4a5b7665351599
• https://github.com/LemmyNet/activitypub-federation-rust
• https://github.com/advisories/GHSA-7723-35v7-qcxw

CVE-2026-33693 · published 2026-03-25T20:23:38Z · modified 2026-04-02T13:44:32.200396077Z · JSON