CVE-2026-82601: Cross Site Scripting in SeaCMS
Description
SeaCMS versions 13.0 through 13.6 contain a cross-site scripting (XSS) vulnerability in the /err.php file via the errtxt parameter. This vulnerability allows remote attackers to inject malicious scripts. The vulnerability has a medium severity with a CVSS score of 5.3. Public exploit code is available, but no official patch or remediation guidance has been provided yet.
CVSS v4.0
Score 5.3medium
Affected software
SeaCMS
cpe:2.3:a:seacms:seacms:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-82601 is a cross-site scripting vulnerability affecting SeaCMS versions 13.0 through 13.6. The flaw exists in the /err.php file where manipulation of the errtxt argument can lead to XSS attacks. This vulnerability can be exploited remotely without privileges or user interaction. Although exploit code has been publicly released, there is no vendor advisory or official fix currently available.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to session hijacking, defacement, or other client-side attacks. The CVSS 4.0 base score of 5.3 indicates a medium severity impact with no required privileges and low attack complexity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider implementing input validation or output encoding on the errtxt parameter to mitigate XSS risks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-30T06:42:28.110Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a94db21acd9273b495a1ebb
Added to database: 08/31/2026, 01:38:41 UTC
Last enriched: 09/07/2026, 15:32:43 UTC
Last updated: 10/13/2026, 06:48:20 UTC
Views: 82
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