PatchTheCVECVE-2026-50739: A bypass for CVE‑2026‑34913 exists with proper ownership validation that had not been applied to the reverse o
CVE-2026-50739 is a medium-severity flaw (CVSS 4.3) affecting revive adserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A bypass for CVE‑2026‑34913 exists with proper ownership validation that had not been applied to the reverse operation of linking campaigns and trackers through the `tracker-campaigns.php` script in Revive Adserver 6.0.7 and earlier. As a result, a low‑privileged user could link their trackers to campaigns owned by other managers on the same instance, leading to inconsistent ownership relationships.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 58%) |
| CISA exploited list | No |
| Weakness | CWE-284 |
| Published | 2026-06-26 |
| Last modified | 2026-10-25 |
Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-50739?
revive adserver: upgrade to 6.0.8. Exact commands for each OS are on this page.
Is CVE-2026-50739 being exploited?
CVE-2026-50739 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-50739 affect?
CVE-2026-50739 affects revive adserver. Severity is medium (CVSS 4.3). A bypass for CVE‑2026‑34913 exists with proper ownership validation that had not been applied to the reverse operation of linking campaigns and trackers through the `tracker-campaigns.php` script in Revive Adserver 6.0.7 and earlier. As a r
How urgent is CVE-2026-50739?
Priority 25/100. No elevated risk signals yet.
Software pages
Related CVEs
- CVE-2026-50741 HIGH 8.8 UPGRADE Bypass to the fix for CVE-2026-34916
- CVE-2026-50745 MEDIUM 6.1 UPGRADE A missing sanitisation vulnerability exists with user input in the stats-video.php script
- CVE-2026-50740 MEDIUM 5.4 UPGRADE A missing sanitisation vulnerability of user input in the zone-include.php script exists in Revive Adserver 6.
- CVE-2026-50742 MEDIUM 5.4 UPGRADE A stored XSS vulnerabilities exists in the `maintenance-acl-check.php` and `maintenance-banners-check.php` too
- CVE-2026-50744 MEDIUM 4.3 UPGRADE A bypass to the admin‑only restriction of the XML‑RPC API in Revive Adserver 6.0.7