SB2026100638 - Path traversal in Jira Service Management Data Center

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Main Vulnerability Database SB2026100638

SB2026100638 - Path traversal in Jira Service Management Data Center

Published: October 6, 2026

Security Bulletin ID SB2026100638
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Path traversal (CVE-ID: CVE-2026-21589)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to read files within the web application root directory.

The vulnerability exists due to improper limitation of a pathname to a restricted directory in Jira Data Center when handling requests containing path traversal sequences. A remote attacker can send a specially crafted request to read files within the web application root directory.

Exploitation requires prior knowledge of the target file's exact name and path, and directory contents cannot be enumerated.


Remediation

Install update from vendor's website.

References