CVE-2026-43875 WWBN AVideo: Password Hash Leaked in MobileManager OAuth Redirect URL Enables Account Takeover
An attacker can capture password hashes from OAuth redirect URLs to take over user accounts, including administrators, in the AVideo platform.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-43875?
CVE-2026-43875 is a medium-severity vulnerability in WWBN AVideo, published on 11 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/MobileManager/oauth2.php completes an OAuth login by sending an HTTP 302 Location: oauth2Success.php?user=<email>&pass=<HASH> where <HASH> is the victim's stored password hash (md5(hash("whirlpool", sha1(password)))) read directly from the users table. AVideo's own login endpoint (objects/login.json.php) accepts an encodedPass=1 flag that bypasses hashing and performs a direct string comparison between the supplied value and the stored hash. Anyone who captures the redirect URL — via server logs, referrer leakage, or browser history — therefore obtains a credential equivalent to the plaintext password and can fully take over the account, including admin accounts. Commit 977cd6930a97571a26da4239e25c8096dd4ecbc1 contains an updated fix.
Weakness: CWE-598
Which versions are affected by CVE-2026-43875?
2 open source packages ship an affected version, including wwbn/avideo.
| Package | Affected | Fixed in |
|---|---|---|
wwbn/avideo Packagist | All versions to 29.0 | None |
wwbn/avideo Packagist | All versions to 29.0 | None |
How do I fix CVE-2026-43875?
No fix has been published for CVE-2026-43875 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-43875 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43875 exists.
Sources
Also known as GHSA-5w8w-26ch-v5cw.