CVE-2026-33480

AVideo has a SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses in Unauthenticated LiveLinks Proxy

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `isSSRFSafeURL()` function in AVideo can be bypassed using IPv4-mapped IPv6 addresses (`::ffff:x.x.x.x`). The unauthenticated `plugin/LiveLinks/proxy.php` endpoint uses this function to validate URLs before fetching them with curl, but the IPv4-mapped IPv6 prefix passes all checks, allowing an attacker to access cloud metadata services, internal networks, and localhost services. Commit 75ce8a579a58c9d4c7aafe453fbced002cb8f373 contains a patch.

Affected

WWBN · AVideo

CVSS v3.1 NVD

8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS

0.43% chance of exploitation in the next 30 days, 36th percentile

Published

2026-03-23

Proof-of-concept exploits (1)

• advisories/GHSA-p3gr-g84w-g8hh

Security advisories

• WWBN/AVideo/security/advisories/GHSA-p3gr-g84w-g8hh
• WWBN/AVideo/commit/75ce8a579a58c9d4c7aafe453fbced002cb8f373

References

• CVE Record
• NVD entry