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.
Affected products
activesupport_project: activesupport
References6
- discuss.rubyonrails.org/t/cve-2023-22796-possible-redos-based-d… PatchVendor Advisory
- discuss.rubyonrails.org/t/cve-2023-22796-possible-redos-based-d… PatchVendor Advisory
- security.netapp.com/advisory/ntap-20240202-0009/
- www.debian.org/security/2023/dsa-5372
- security.netapp.com/advisory/ntap-20240202-0009/
- www.debian.org/security/2023/dsa-5372
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 2% percentile: 77 · as of 6 November 2026
- CWE
- CWE-400CWE-1333
Could this be exploited in your environment?
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