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PatchSiren cyber security CVE debrief

CVE-2026-50740 Revive CVE debrief

CVE-2026-50740 is a reflected Cross-Site Scripting (XSS) vulnerability in Revive Adserver 6.0.7 and earlier versions. The vulnerability exists in the zone-include.php script due to missing sanitization of user input. An attacker with low privileges could exploit this vulnerability by manipulating the refresh parameter of the iFrame invocation tag to perform reflected XSS attacks. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 5.4, indicating a medium severity level. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. This vulnerability was published on June 26, 2026, and modified on June 29, 2026.

Vendor
Revive
Product
Adserver
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-26
Original CVE updated
2026-07-08
Advisory published
2026-06-26
Advisory updated
2026-07-08

Who should care

Administrators and users of Revive Adserver 6.0.7 and earlier versions should be aware of this vulnerability and take necessary actions to mitigate it. This vulnerability can be exploited by low-privileged users, making it a concern for organizations that use Revive Adserver. Additionally, organizations that have integrated Revive Adserver into their systems should also be aware of this vulnerability and take steps to protect themselves.

Technical summary

The vulnerability exists in the zone-include.php script of Revive Adserver 6.0.7 and earlier versions. The script does not properly sanitize user input, allowing an attacker to inject malicious code. The vulnerability can be exploited through the refresh parameter of the iFrame invocation tag. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N, indicating a medium severity level. The vulnerability was reported through HackerOne and is tracked as issue 3780806.

Defensive priority

This vulnerability has a medium severity level with a CVSS score of 5.4. Organizations should prioritize patching or mitigating this vulnerability to prevent potential attacks.

Recommended defensive actions

  • Apply the patch or upgrade to Revive Adserver 6.0.8 or later versions.
  • Restrict access to the zone-include.php script.
  • Implement additional security measures such as input validation and output encoding.
  • Monitor for suspicious activity and implement incident response plans.
  • Review and update incident response plans to address potential XSS attacks.

Evidence notes

The vulnerability was reported through HackerOne and is tracked as issue 3780806. The CVE record and NVD detail pages provide additional information about the vulnerability. The source item URL provides further details about the vulnerability, including the CVSS vector and CPE criteria.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50740 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50740

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50740 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50740

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.