Path Traversal Vulnerability in Sooperset MCP-Atlassian by Sooperset
CVE-2026-124503

5.3MEDIUM

Key Information:

Vendor

Sooperset

Status
Mcp-atlassian
Vendor
CVE Published:
10 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-124503?

A path traversal vulnerability exists in the Sooperset MCP-Atlassian product, specifically in the validate_safe_path function found in src/mcp_atlassian/utils/io.py. By manipulating the path argument, an attacker could potentially gain unauthorized access to sensitive files on the server. The vulnerability allows remote execution of the exploit, making it crucial for users to upgrade to version 0.24.1 or higher to mitigate the risk. It is essential to address this vulnerability promptly to protect the integrity and confidentiality of your data.

Affected Version(s)

mcp-atlassian 0.1

mcp-atlassian 0.2

mcp-atlassian 0.3

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-2026-124503 - Proof of Concept

References

https://vuldb.com/vuln/433614
vdb-entrytechnical-description
https://vuldb.com/vuln/433614/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-124503
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

NeoWSY (VulDB User)
VulDB CNA Team
.