EUVD-2026-39601
GHSA-v78r-pfp2-f4c7
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Low-privilege authentication required over network; impact is integrity-only, limited to cross-manager ownership record pollution with no confidentiality or availability effect.
Primary rating from Vendor (hackerone).
CVSS VectorVendor: hackerone
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
Ownership validation bypass in Revive Adserver 6.0.7 and earlier allows a low-privileged authenticated user to link their own trackers to campaigns belonging to other managers on the same instance via the tracker-campaigns.php script. This is a bypass of the fix introduced for CVE-2026-34913, which applied ownership checks only to the forward linking operation but omitted the reverse direction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires an authenticated low-privileged user account on the Revive Adserver instance (confirmed by CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.0 score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N) accurately reflects the bounded impact of this flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker holding a low-privileged account on a shared Revive Adserver instance sends a crafted HTTP request to `tracker-campaigns.php` specifying a campaign ID owned by a different manager. Because ownership validation is absent for this reverse linking path, the server accepts the request and creates a tracker-campaign association across manager boundaries. … |
| Remediation | Upgrade Revive Adserver to a version that incorporates the corrected ownership validation for the reverse tracker-campaign linking operation in `tracker-campaigns.php`. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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