AVideo has SSRF in Scheduler Plugin via callbackURL Missing `isSSRFSafeURL()` Validation

published 2026-03-19 7 mo ago modified 2026-06-17 4 mo ago also GHSA-v467-g7g7-hhfh , EUVD-2026-13889

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

WWBN AVideo is an open source video platform. Prior to version 26.0, the Scheduler plugin's `run()` function in `plugin/Scheduler/Scheduler.php` calls `url_get_contents()` with an admin-configurable `callbackURL` that is validated only by `isValidURL()` (URL format check). Unlike other AVideo endpoints that were recently patched for SSRF (GHSA-9x67-f2v7-63rw, GHSA-h39h-7cvg-q7j6), the Scheduler's callback URL is never passed through `isSSRFSafeURL()`, which blocks requests to RFC-1918 private addresses, loopback, and cloud metadata endpoints. An admin can configure a scheduled task with an internal network `callbackURL` to perform SSRF against cloud infrastructure metadata services or internal APIs not otherwise reachable from the internet. Version 26.0 contains a patch for the issue.

Patch / fix

fixed in 2 links 1

packagist wwbn/avideo 26.0
wwbn avideo 26.0

github.com/WWBN/AVideo@df926e5 commit

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-03-24)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/WWBN/AVideo/security/advisories/GHSA-v467-g7g7-hhfh referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
GitHub	3.1	5.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	wwbn/avideo	<26.0	26.0

Affected products

WWBN AVideo

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

github.com /WWBN/AVideo/commit/df926e500580c2a1e3c70351f0c30f4e15c0fd83
web, patch
github.com /WWBN/AVideo/security/advisories/GHSA-v467-g7g7-hhfh
web, exploit, mitigation, vendor-advisory
github.com /WWBN/AVideo/issues/10403
web
nvd.nist.gov /vuln/detail/CVE-2026-33237
advisory
github.com /WWBN/AVideo
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary