CVE-2026-44959 Code injection in Adserver
A low-privileged user can inject malicious PHP code into delivery limitations, leading to remote code execution during banner delivery.
- 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-2026-44959?
CVE-2026-44959 is a high-severity code injection vulnerability in Revive Adserver, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A missing validation of user input exists when saving delivery limitations in Revive Adserver 6.0.6 and earlier. A low‑privileged user could add an unexpected component parameter and inject malicious PHP code into the compiledlimitations field, which would then be executed during banner delivery. Input sanitisation has been improved to ensure that unexpected parameters are filtered out.
Weakness: CWE-94
Which versions are affected by CVE-2026-44959?
How do I fix CVE-2026-44959?
No fix has been published for CVE-2026-44959 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-44959 being exploited?
There is no known exploitation of CVE-2026-44959 in the wild and no public exploit code.
Sources
Also known as GHSA-h4mp-fxvg-qvvr.