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CVE-2026-82601— SeaCMS err.php cross site scripting

Quick assessment

Affected
n/a SeaCMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SeaCMS 13.6 及以下版本中存在一个安全缺陷。该缺陷影响 /err.php 文件中的未知部分。通过对参数 errtxt 进行操控，可引发跨站脚本（XSS）攻击。该攻击可远程发起，且漏洞的利用方式已公开，可能被用于发起攻击。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-82601

Vulnerability Information
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Vulnerability Title
SeaCMS err.php cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in SeaCMS up to 13.6. This affects an unknown part of the file /err.php. Executing a manipulation of the argument errtxt can lead to cross site scripting. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- SeaCMS 13.0 cpe:2.3:a:seacms:seacms:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82601

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III. Intelligence Information for CVE-2026-82601

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Other References for CVE-2026-82601 (1)

Other References for CVE-2026-82601 (4)

Same Patch Batch · n/a · 2026-08-31 · 8 CVEs total

CVE-2026-82608 7.4 HIGH Kamailio AVP cxdx_avp.c get_4bytes out-of-bounds
CVE-2026-82600 7.3 HIGH SeaCMS zyapi.php sql injection
CVE-2026-82598 7.3 HIGH SeaCMS Template search.php parseIf code injection
CVE-2026-82603 5.4 MEDIUM SeaCMS Comment Cache member.php del_pl path traversal
CVE-2026-82599 5.4 MEDIUM SeaCMS Avatar Upload member.php unlink path traversal
CVE-2026-82602 5.3 MEDIUM SeaCMS ass.php authorization
CVE-2026-82596 3.3 LOW LatencyUtils PauseDetector LatencyStats.java LatencyStats.recordDetectedPause memory corru

IV. Related Vulnerabilities

Same product: SeaCMS
Same vendor: n/a
Same weakness: CWE-79

V. Comments for CVE-2026-82601

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