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CVE-2026-50739

MEDIUM
4.3
CVSS Score
Published: June 26, 2026 at 01:11 AM UTC
Updated: October 25, 2026 at 10:10 PM UTC
2 products affected across 2 vendorsRevive AdserverAdserver

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Revive Adserver· Revive Adserver
95%
v < 6.0.8
Affected range stops below 6.0.8, so it looks safe — our inference, not a vendor statement
Adserver· Revive
90%
v ≤ 6.0.7

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Issue TrackingThird Party Advisory
Source: cverecord
https://hackerone.com/reports/3780709

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMhackerone
Vector?

Quick Info

StatusANALYZED
CWE
CWE-284

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