Revive Adserver up to 6.0.4 banner-acl.php cap/session_capping/time cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Revive Adserver up to 6.0.4. Affected is an unknown function of the file banner-acl.php. Performing a manipulation of the argument cap/session_capping/time results in cross site scripting. This vulnerability is reported as CVE-2026-21663. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Revive Adserver up to 6.0.4. This affects an unknown functionality of the file banner-acl.php. The manipulation of the argument cap/session_capping/time with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

HackerOne community member Patrick Lang (7yr) has reported a reflected XSS vulnerability in the banner-acl.php script 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.

It is possible to read the advisory at hackerone.com. This vulnerability is uniquely identified as CVE-2026-21663. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

By approaching the search of inurl:banner-acl.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 6.0.5 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Revive Adserver 6.0.5

Timelineinfo

01/15/2026 Advisory disclosed
01/15/2026 +0 days VulDB entry created
01/27/2026 +12 days VulDB entry last update

Sourcesinfo

Advisory: hackerone.com
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-21663 (🔒)
GCVE (CVE): GCVE-0-2026-21663
GCVE (VulDB): GCVE-100-341307

Entryinfo

Created: 01/15/2026 15:50
Updated: 01/27/2026 06:14
Changes: 01/15/2026 15:50 (54), 01/27/2026 06:14 (12)
Complete: 🔍
Cache ID: 216::103

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