Quick answers
- Is CVE-2026-44959 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-44959 being exploited in the wild.
- How severe is CVE-2026-44959?
- High severity, with a CVSS score of 8.8, published 23 June 2026.
- Which products and versions are affected?
- Revive-Adserver Adserver 6.0.6 and earlier.
- Is there a fix for CVE-2026-44959?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-44959 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-44959?
- Check whether you run Revive-Adserver Adserver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A code injection vulnerability (CWE-94) exists in Revive Adserver due to insufficient input validation when saving delivery limitations. An authenticated attacker with low-level privileges can supply unexpected component parameters that are improperly sanitized before being stored in the 'compiledlimitations' field. Because this field is later executed as PHP code during the banner delivery process, the attacker can achieve remote code execution (RCE) on the underlying server. The vulnerability is addressed in versions following 6.0.6 by improving input sanitization to filter out unauthorized parameters.
Affected products
- Revive Adserver 6.0.6 and earlier
Timeline
- 2026-06-23: advisory: NVD publication date
- 2026-06-23: disclosed: HackerOne report published