EUVD-2026-38505
GHSA-hqvw-xvc4-mxq4
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Network-accessible endpoint requires a valid advertiser credential (PR:L); impact is confined to unauthorized banner status toggles, affecting only integrity and availability at low severity with no confidentiality exposure.
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:L
Lifecycle Timeline
1DescriptionCVE.org
An access control bypass allows an advertiser‑level user to activate or deactivate a banner in Revive Adserver 6.0.6 and earlier, even when such permissions were not granted. The banner-edit.php script allowed the banner status to be overwritten solely based on banner edit permissions. The status field has been removed from the hidden form fields in the banner edit screen.
AnalysisAI
Privilege escalation within Revive Adserver 6.0.6 and earlier allows authenticated advertiser-level users to activate or deactivate banner ads regardless of whether those permissions were explicitly granted. The banner-edit.php script evaluated banner status changes based solely on banner edit permissions, treating status modification as implicitly authorized whenever edit access existed. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid advertiser-level account within the Revive Adserver instance - unauthenticated access is not sufficient. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.0 base score of 5.4 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L) accurately reflects the constrained impact: an authenticated advertiser can alter banner status but cannot read sensitive data or fully disable the platform. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated advertiser holding banner edit permissions but not status management permissions navigates to banner-edit.php for any banner they can edit, intercepts the form submission (via browser developer tools or a proxy), and modifies the hidden status field to activate or deactivate the target banner before submitting. No public POC has been identified at time of analysis, but the technique requires only basic web manipulation skills. |
| Remediation | Upgrade Revive Adserver to a version released after 6.0.6 in which the status field has been removed from the hidden form fields in the banner edit screen, as confirmed by the vulnerability description. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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