CVE-2026-21642
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the ...
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php and channel-acl.php scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php and channel-acl.php scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
- Record
CVE-2026-21642- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2026-3324
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php and channel-acl.php scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
- Record
EUVD-2026-3324- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q3r6-8php-frm2
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the ...
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php and channel-acl.php scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
- Record
GHSA-q3r6-8php-frm2- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php and channel-acl.php scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
- Record
CVE-2026-21642- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php and channel-acl.php scripts of Revive Adserver. An attacker can craft a specific URL that includes an HTML payload in a parameter. If a logged in administrator visits the URL, the HTML is sent to the browser and malicious scripts would be executed.
- Record
CVE-2026-21642- CVSS 3.0
- 6.1 Medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21642 is a medium vulnerability (CVSS 6.1) in Aquaplatform Revive Adserver, published January 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 10th percentile. No source names a fixed version.