Revive Adserver up to 6.0.4 afr.php target 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, was found in Revive Adserver up to 6.0.4. Affected by this vulnerability is an unknown functionality of the file afr.php. Executing a manipulation of the argument target can lead to cross site scripting. This vulnerability appears as CVE-2026-21664. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Revive Adserver up to 6.0.4. This vulnerability affects some unknown functionality of the file afr.php. The manipulation of the argument target with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

HackerOne community member Huynh Pham Thanh Luc (nigh7c0r3) has reported a reflected XSS vulnerability in the afr.php delivery 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.

The weakness was presented by Huynh Pham Thanh Luc. The advisory is shared for download at hackerone.com. This vulnerability was named CVE-2026-21664. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

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

Upgrading to version 6.0.5 eliminates this vulnerability.

Once again VulDB remains the best source 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
Researcher: Huynh Pham Thanh Luc
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-21664 (🔒)
GCVE (CVE): GCVE-0-2026-21664
GCVE (VulDB): GCVE-100-341308

Entryinfo

Created: 01/15/2026 15:50
Updated: 01/27/2026 08:05
Changes: 01/15/2026 15:50 (55), 01/27/2026 08:05 (12)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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