Path Traversal Vulnerability in SeaCMS Avatar Upload Affects File Management
CVE-2026-82599

5.3MEDIUM

Key Information:

Vendor

SeaCMS

Status
Seacms
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82599?

A path traversal vulnerability has been identified in SeaCMS, specifically within the Avatar Upload feature of the /member.php?action=chgpwdsubmit component. By manipulating the oldpic parameter, an attacker can navigate the file system, potentially accessing sensitive files and executing unauthorized actions. This vulnerability can be exploited remotely, and publicly available exploit scripts may facilitate attacks, underscoring the urgency for mitigation in affected versions.

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-2026-82599 - Proof of Concept

References

https://vuldb.com/vuln/397101
vdb-entrytechnical-description
https://vuldb.com/vuln/397101/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82599
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)
.