Description
A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.
References (3)
Scores
CVSS v3
7.5
EPSS
0.0148
EPSS Percentile
81.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
CWE-400
Status
published
Products (2)
activesupport_project/activesupport
< 6.1.7.1
rubygems/activesupport
0 - 6.1.7.1RubyGems
Published
Feb 09, 2023
Tracked Since
Feb 18, 2026