CVE-2026-44957: CWE-284 Improper Access Control - Generic in Revive Adserver
A missing access control check when invoking various modify methods in the XML‑RPC API of Revive Adserver 6.0.6 and earlier. The API allowed entities to be reassigned to different parent entities, leading to inconsistent ownership relationships. This issue was exploitable only in combination with CVE‑2026‑34917 or with third‑party API extensions that expose API functionality to low‑privileged users. Access control checks have been added to validate access to parent entities in the API modify methods.
AI Analysis
Technical Summary
This vulnerability arises from a missing access control check in various modify methods of the XML-RPC API in Revive Adserver versions 6.0.6 and earlier. The flaw permits entities to be reassigned to different parent entities, leading to inconsistent ownership relationships within the system. However, exploitation is limited to scenarios where it is combined with CVE-2026-34917 or when third-party API extensions expose the API to low-privileged users. The vendor has added access control validations to the API modify methods to mitigate this issue.
Potential Impact
The vulnerability allows unauthorized modification of entity parentage, resulting in inconsistent ownership relationships. This can lead to integrity issues within the application but does not directly impact confidentiality or availability. Exploitation requires additional vulnerabilities or insecure third-party extensions, limiting the attack surface.
Mitigation Recommendations
No official patch or remediation level has been confirmed yet. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor vendor communications for updates and avoid exposing the XML-RPC API to low-privileged users or untrusted third-party extensions that could facilitate exploitation.
CVE-2026-44957: CWE-284 Improper Access Control - Generic in Revive Adserver
Description
A missing access control check when invoking various modify methods in the XML‑RPC API of Revive Adserver 6.0.6 and earlier. The API allowed entities to be reassigned to different parent entities, leading to inconsistent ownership relationships. This issue was exploitable only in combination with CVE‑2026‑34917 or with third‑party API extensions that expose API functionality to low‑privileged users. Access control checks have been added to validate access to parent entities in the API modify methods.
CVSS v3.0
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from a missing access control check in various modify methods of the XML-RPC API in Revive Adserver versions 6.0.6 and earlier. The flaw permits entities to be reassigned to different parent entities, leading to inconsistent ownership relationships within the system. However, exploitation is limited to scenarios where it is combined with CVE-2026-34917 or when third-party API extensions expose the API to low-privileged users. The vendor has added access control validations to the API modify methods to mitigate this issue.
Potential Impact
The vulnerability allows unauthorized modification of entity parentage, resulting in inconsistent ownership relationships. This can lead to integrity issues within the application but does not directly impact confidentiality or availability. Exploitation requires additional vulnerabilities or insecure third-party extensions, limiting the attack surface.
Mitigation Recommendations
No official patch or remediation level has been confirmed yet. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor vendor communications for updates and avoid exposing the XML-RPC API to low-privileged users or untrusted third-party extensions that could facilitate exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- hackerone
- Date Reserved
- 2026-05-08T15:00:02.447Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ab6d8eed863c81e4f99ee
Added to database: 06/23/2026, 16:39:52 UTC
Last enriched: 06/23/2026, 16:56:39 UTC
Last updated: 06/24/2026, 00:37:18 UTC
Views: 5
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