Stored Cross-Site Scripting Vulnerability in SeaCMS by Seacms
CVE-2020-36932

5.1MEDIUM

Key Information:

Vendor

Seacms

Status
Seacms
Vendor
CVE Published:
25 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36932?

SeaCMS version 11.1 has a vulnerability that allows attackers to exploit the 'checkuser' parameter on the admin settings page. By injecting malicious JavaScript payloads, an attacker can compromise user sessions or execute arbitrary scripts within a user's browser. This can lead to a range of attacks, including data theft, session hijacking, or defacement of the web application. Proper validation and sanitization of user input in the affected parameter are essential to mitigate this risk.

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Affected Version(s)

Seacms 0 <= 11.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36932 - Proof of Concept

References

https://www.exploit-db.com/exploits/49251
exploit
https://www.seacms.net/
product
https://www.vulncheck.com/advisories/seacms-checkuser-sto...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

j5s
JSON
.