SB2025070409 - Inefficient regular expression complexity in octokit request-error
Published: July 4, 2025
Security Bulletin ID
SB2025070409
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) Inefficient regular expression complexity (CVE-ID: CVE-2025-25289)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation when processing untrusted input with a regular expressions in the processing of HTTP request headers. A remote attacker can send an authorization header containing an excessively long sequence of spaces followed by a newline and "@" to exploit inefficient regular expression processing and leading to excessive resource consumption.
Remediation
Install update from vendor's website.