What is CVE-2026-50739?

CVE-2026-50739 is a medium-severity vulnerability in Revive Adserver, classified under Improper Access Control. CVSS score: 4.3/10. Published 2026-06-26.

How severe is CVE-2026-50739?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Revive Adserver

CVE-2026-50739

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…

EPSS: 0.002 (6.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Revive Adserver — versions 0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

support@hackerone.com

Frequently asked questions

What is CVE-2026-50739?: CVE-2026-50739 is a medium-severity vulnerability in Revive Adserver, classified under Improper Access Control. CVSS score: 4.3/10. Published 2026-06-26.
How severe is CVE-2026-50739?: Medium severity. CVSS v3 base score is 4.3 out of 10.