SB2026012256 - Jira Software Data Center and Server update for org.apache.tomcat:tomcat-coyote
Published: January 22, 2026
Security Bulletin ID
SB2026012256
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2025-52434)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when handling HTTP/2 requests with APR/Native. A remote attacker can send specially crafted HTTP requests to the server and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.