CVE-2026-34912
Deferred Deferred - Pending Action

Missing Access Control in Revive Adserver Linking Zones

Publication date: 2026-06-23

Last updated on: 2026-06-23

Assigner: HackerOne

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.

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Meta Information

Published
2026-06-23
Last Modified
2026-06-23
Generated
2026-07-14
AI Q&A
2026-06-23
EPSS Evaluated
2026-07-12
NVD
CVE-2026-34912
EUVD
EUVD-2026-38501

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
revive_adserver revive_adserver to 6.0.6 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This vulnerability is due to a missing access control check in Revive Adserver version 6.0.6 and earlier. Specifically, when linking banners or campaigns to a zone through the zone-include.php script or via the API, a low-privileged user can link their zones to banners or campaigns owned by other managers on the same instance.

This results in inconsistent ownership relationships because the system does not properly verify that the banners and campaigns belong to the same account managing the zone.

To fix this, ownership validation has been added to ensure that banners and campaigns can only be linked to zones managed by the same account.

Mitigation Strategies

To mitigate this vulnerability, ensure that you upgrade Revive Adserver to a version later than 6.0.6 where ownership validation has been added. This validation ensures that banners and campaigns can only be linked to zones managed by the same account, preventing low-privileged users from linking zones to banners or campaigns owned by other managers.

Impact Analysis

This vulnerability allows a low-privileged user to link their zones to banners or campaigns owned by other managers, which can cause inconsistent ownership relationships within the Revive Adserver instance.

While it does not directly impact confidentiality or availability, it can lead to integrity issues by allowing unauthorized linking of advertising assets, potentially causing confusion or misuse of advertising campaigns.

Compliance Impact

This vulnerability allows a low-privileged user to link their zones to banners or campaigns owned by other managers, resulting in inconsistent ownership relationships.

Such inconsistent ownership and potential unauthorized linking could lead to issues with data integrity and access control, which are important aspects of compliance with standards like GDPR and HIPAA.

However, the provided information does not explicitly describe the direct impact on compliance with these regulations.

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