[REVIVE-SA-2025-001] Revive Adserver Vulnerability

[Matteo Beccati <matteo () beccati com>]

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Revive Adserver Security Advisory                     REVIVE-SA-2025-001
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https://www.revive-adserver.com/security/revive-sa-2025-001
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CVE-ID:                CVE-2025-27208
Date:                  2025-10-22
Risk Level:            Very low
Applications affected: Revive Adserver
Versions affected:     <= 5.5.2
Versions not affected: >= 6.0.0
Website:               https://www.revive-adserver.com/
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Vulnerability: Reflected XSS
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Vulnerability Type:    Improper Neutralization of Input During Web Page
                       Generation ('Cross-site Scripting')
                       [CWE-79]
CVSS Base Score:       4.3
CVSS Vector:           CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
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Description
-----------
Jiasheng He (https://github.com/hebing123) from Qihoo 360 has reported a 
reflected XSS vulnerability in the admin-search.php script. An attacker 
can craft a specific URL that includes an HTML payload in the compact 
parameter. If a logged in administrator visits the URL, the HTML is sent 
to the browser and malicious scripts would be executed.


Details
-------
The "compact" GET parameter sent to the admin-search.php script is used 
in the output without proper sanitisation, allowing an attacker to craft 
specific URLs and have payloads output in the HTML, JS, and/or CSS 
context. Successful exploitation requires an attacker to trick a logged 
in administrator into visiting the crafted URL. Most importantly, the 
session cookie cannot be accessed or stolen via JavaScript, so the 
disruption would be limited.


References
----------
https://hackerone.com/reports/3091390
https://github.com/revive-adserver/revive-adserver/commit/0c68d1bb
https://cwe.mitre.org/data/definitions/79.html


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Solution
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We strongly advise people to upgrade to the most recent 6.0.0 version of
Revive Adserver.


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Contact Information
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The security contact for Revive Adserver can be reached at:
<security AT revive-adserver DOT com>.

Please review https://www.revive-adserver.com/security/ before doing so.


--
Matteo Beccati
On behalf of the Revive Adserver Team
https://www.revive-adserver.com/

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