CVE-2026-34912: CWE-284 Improper Access Control - Generic in Revive Adserver
A missing access control check when linking banners or campaigns to a zone through the zone-include.php script of Revive Adserver 6.0.6 and earlier, or via its API allows a low‑privileged user could link their zones to banners or campaigns owned by other managers on the same instance, resulting in inconsistent ownership relationships. Ownership validation has been added to ensure that banners and campaigns can only be linked to zones managed by the same account.
AI Analysis
Technical Summary
CVE-2026-34912 is an improper access control vulnerability (CWE-284) in Revive Adserver 6.0.6 and earlier. The vulnerability arises from a missing access control check when linking banners or campaigns to zones via the zone-include.php script or the API. This allows a low-privileged user to link zones they control to banners or campaigns owned by other managers on the same Revive Adserver instance, resulting in inconsistent ownership relationships. The vendor has added ownership validation to ensure that banners and campaigns can only be linked to zones managed by the same account.
Potential Impact
The vulnerability does not allow direct confidentiality or availability impact but can lead to integrity issues by enabling low-privileged users to manipulate ownership relationships between zones, banners, and campaigns. This could cause confusion or unauthorized modification of advertising content associations within the affected Revive Adserver instance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The vendor has indicated that ownership validation has been added to address this issue, implying a fix exists in versions after 6.0.6. Users should upgrade to a version later than 6.0.6 once available. Until then, restrict access to trusted users and monitor for unauthorized linking activities.
CVE-2026-34912: CWE-284 Improper Access Control - Generic in Revive Adserver
Description
A missing access control check when linking banners or campaigns to a zone through the zone-include.php script of Revive Adserver 6.0.6 and earlier, or via its API allows a low‑privileged user could link their zones to banners or campaigns owned by other managers on the same instance, resulting in inconsistent ownership relationships. Ownership validation has been added to ensure that banners and campaigns can only be linked to zones managed by the same account.
CVSS v3.0
Score 4.3medium
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34912 is an improper access control vulnerability (CWE-284) in Revive Adserver 6.0.6 and earlier. The vulnerability arises from a missing access control check when linking banners or campaigns to zones via the zone-include.php script or the API. This allows a low-privileged user to link zones they control to banners or campaigns owned by other managers on the same Revive Adserver instance, resulting in inconsistent ownership relationships. The vendor has added ownership validation to ensure that banners and campaigns can only be linked to zones managed by the same account.
Potential Impact
The vulnerability does not allow direct confidentiality or availability impact but can lead to integrity issues by enabling low-privileged users to manipulate ownership relationships between zones, banners, and campaigns. This could cause confusion or unauthorized modification of advertising content associations within the affected Revive Adserver instance.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The vendor has indicated that ownership validation has been added to address this issue, implying a fix exists in versions after 6.0.6. Users should upgrade to a version later than 6.0.6 once available. Until then, restrict access to trusted users and monitor for unauthorized linking activities.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-03-31T15:00:06.522Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ab6d7eed863c81e4f98ff
Added to database: 06/23/2026, 16:39:51 UTC
Last enriched: 06/23/2026, 17:10:40 UTC
Last updated: 06/23/2026, 21:22:20 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.