CVE-2026-44959
Deferred Deferred - Pending Action

PHP Code Injection in Revive Adserver

Publication date: 2026-06-23

Last updated on: 2026-06-23

Assigner: HackerOne

Description
A missing validation of user input exists when saving delivery limitations in Revive Adserver 6.0.6 and earlier. A low‑privileged user could add an unexpected component parameter and inject malicious PHP code into the compiledlimitations field, which would then be executed during banner delivery. Input sanitisation has been improved to ensure that unexpected parameters are filtered out.

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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-2026-44959
EUVD
EUVD-2026-38500

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-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

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Executive Summary

This vulnerability exists in Revive Adserver version 6.0.6 and earlier, where there is a missing validation of user input when saving delivery limitations.

A low-privileged user can exploit this by adding an unexpected component parameter that injects malicious PHP code into the compiledlimitations field.

This malicious code is then executed during banner delivery, potentially compromising the system.

The issue has been addressed by improving input sanitisation to filter out unexpected parameters.

Impact Analysis

Exploitation of this vulnerability allows a low-privileged user to execute arbitrary PHP code on the server during banner delivery.

This can lead to full compromise of the affected system, including unauthorized access, data theft, data modification, or disruption of service.

The CVSS score of 8.8 indicates a high severity impact on confidentiality, integrity, and availability.

Mitigation Strategies

To mitigate this vulnerability, ensure that you upgrade Revive Adserver to a version later than 6.0.6 where input sanitisation has been improved to filter out unexpected parameters.

Additionally, restrict low-privileged users from adding unexpected component parameters and monitor for any suspicious PHP code execution during banner delivery.

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