Medium severity · published Aug 31, 2026
CVE-2026-82601
SeaCMS err.php cross site scripting
4.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
SeaCMS · Seacms
13.0; 13.1; 13.2; 13.3; 13.4; 13.5; +1 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82601
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82601
github.com
https://github.com/T-Chachamaru/seacms-13.6-security-advisories/blob/a084a3e573240d54860153321df271280daec262/c-007-errtxt-reflected-xss.md
vuldb.com
https://vuldb.com/cve/CVE-2026-82601
vuldb.com
https://vuldb.com/submit/892786
vuldb.com
https://vuldb.com/vuln/397103
vuldb.com
https://vuldb.com/vuln/397103/cti
More from SeaCMS
9.8
CVE-2025-15002
SeaCMS mysqli.class.php sql injection
9.8
CVE-2025-10662
SeaCMS admin_members.php sql injection
9.8
CVE-2025-44073
SeaCMS v13.3 was discovered to contain a SQL injection vulnerability via the component admin_comment_news.php
9.8
CVE-2025-44072
SeaCMS v13.3 was discovered to contain a SQL injection vulnerability via the component admin_manager.php
9.8
CVE-2025-44071
SeaCMS v13.3 was discovered to contain a remote code execution (RCE) vulnerability via the component phomebak.php