CVE-2026-33766
published 2026-03-27CVE-2026-33766: WWBN AVideo is an open source video platform. In versions up to and including 26.0, `isSSRFSafeURL()` validates URLs against private/reserved IP ranges before…
PriorityP336medium6.5CVSS 3.1
AVNACLPRNUINSUCLILAN
EPSS
0.23%
14.1th percentile
WWBN AVideo is an open source video platform. In versions up to and including 26.0, `isSSRFSafeURL()` validates URLs against private/reserved IP ranges before fetching, but `url_get_contents()` follows HTTP redirects without re-validating the redirect target. An attacker can bypass SSRF protection by redirecting from a public URL to an internal target. Commit 8b7e9dad359d5fac69e0cbbb370250e0b284bc12 contains a patch.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| wwbn | avideo | <= 26.0 | — |
| wwbn | avideo | 0 – 26.0 | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
nvdv4.05.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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OSV
AVideo has SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints
osv·2026-03-26
CVE-2026-33766 [MEDIUM] AVideo has SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints
AVideo has SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints
## Summary
`isSSRFSafeURL()` validates URLs against private/reserved IP ranges before fetching, but `url_get_contents()` follows HTTP redirects without re-validating the redirect target. An attacker can bypass SSRF protection by redirecting from a public URL to an internal target.
## Root Cause
**Check-time:** `isSSRFSafeURL()` at `objects/functions.php:4066` resolves the hostname and validates the IP.
**Use-time:** `url_get_contents()` at `objects/functions.php:1990` calls `file_get_contents()` with PHP's default `follow_location=1` — redirects are followed without re-validation. The wget fallback at line 2047 also follows redirects by default.
**Affected endpoint:** `objects/aVideoEncoderReceiveImage.js
GHSA
AVideo has SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints
ghsa·2026-03-26
CVE-2026-33766 [MEDIUM] CWE-918 AVideo has SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints
AVideo has SSRF Protection Bypass via HTTP Redirect in Image Download Endpoints
## Summary
`isSSRFSafeURL()` validates URLs against private/reserved IP ranges before fetching, but `url_get_contents()` follows HTTP redirects without re-validating the redirect target. An attacker can bypass SSRF protection by redirecting from a public URL to an internal target.
## Root Cause
**Check-time:** `isSSRFSafeURL()` at `objects/functions.php:4066` resolves the hostname and validates the IP.
**Use-time:** `url_get_contents()` at `objects/functions.php:1990` calls `file_get_contents()` with PHP's default `follow_location=1` — redirects are followed without re-validation. The wget fallback at line 2047 also follows redirects by default.
**Affected endpoint:** `objects/aVideoEncoderReceiveImage.js
No detection rules found.
No public exploits indexed.
2026-03-27
Published