Path Traversal Vulnerability in SeaCMS Affects Comment Cache Processing
CVE-2026-82603

5.3MEDIUM

Key Information:

Vendor

SeaCMS

Status
Seacms
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82603?

A path traversal vulnerability has been identified in SeaCMS versions up to 13.6, specifically within the member.php file when handling the del_pl action. This vulnerability allows attackers to manipulate the itype/vid argument, potentially enabling unauthorized access to sensitive files on the server. The issue can be exploited remotely, making it a critical concern for users running affected versions of SeaCMS. With exploit code available publicly, immediate action is recommended to secure affected systems.

Affected Version(s)

SeaCMS 13.0

SeaCMS 13.1

SeaCMS 13.2

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-2026-82603 - Proof of Concept

References

https://vuldb.com/vuln/397105
vdb-entrytechnical-description
https://vuldb.com/vuln/397105/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82603
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

T-Chachamaru (VulDB User)
.