#VU126976 Inefficient regular expression complexity in Mastodon

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Main Vulnerability Database Vulnerabilities #VU126976

#VU126976 Inefficient regular expression complexity in Mastodon

Published: September 30, 2024 / Updated: April 23, 2026


Vulnerability identifier: #VU126976
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-1333
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Mastodon
Software vendor:
Mastodon

Description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient regular expression complexity in regular expressions when processing specifically crafted queries. A remote attacker can send specifically crafted queries to cause a denial of service.

This does not affect servers running on Ruby 3.3.


Remediation

Install security update from vendor's website.

External links