Vulnerability · Published Jan 25, 2026 · Assigned by VulnCheck

CVE-2020-36932Seacms 11.1 - 'checkuser' Stored XSS

Medium 6.1

In plain English

A medium-severity cross-site scripting in Seacms from Seacms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.3%top 79.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

SeaCMS 11.1 contains a stored cross-site scripting vulnerability in the checkuser parameter of the admin settings page. Attackers can inject malicious JavaScript payloads that will execute in users' browsers when the page is loaded.

Affected products (as reported)

Vendor	Product	Versions
Seacms	Seacms	0 – through 11.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

ExploitDB-49251 exploit
Official Seacms Product Homepage product
VulnCheck Advisory: Seacms 11.1 - 'checkuser' Stored XSS third-party-advisory