CVE-2026-50744 Auth bypass in Adserver
Attackers can bypass admin restrictions in Revive Adserver by reusing leaked session IDs from failed login attempts to perform unauthorized API calls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-50744?
CVE-2026-50744 is a medium-severity authentication bypass vulnerability in Revive-Adserver Revive Adserver, published on 26 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A bypass to the admin‑only restriction of the XML‑RPC API in Revive Adserver 6.0.7. The API response for the ox.login method returned a session ID cookie in the HTTP headers, and although the method correctly returned an error, the associated session was not invalidated. As a result, the leaked session ID could be used to perform subsequent API calls without restrictions.
Weakness: CWE-284
Which versions are affected by CVE-2026-50744?
It affects 1 product.
Products include Revive-Adserver Revive Adserver.
How do I fix CVE-2026-50744?
No fix has been published for CVE-2026-50744 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-50744 being exploited?
There is no known exploitation of CVE-2026-50744 in the wild and no public exploit code.
Other vulnerabilities in Revive-Adserver Revive Adserver
- CVE-2016-9124 Security feature bypass in Revive Adserver All versions before 3.2.3
- CVE-2016-9125 Auth bypass in Revive Adserver All versions before 3.2.3
- CVE-2017-5830 Deserialization in n/a
- CVE-2016-9470 Other in Revive Adserver All versions before 3.2.5 and 4.0.0
- CVE-2026-50741 Code injection in Adserver
Sources
Also known as GHSA-q5xg-wh3x-vmcf.