🛡️ CVE-2023-22795
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-1333 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A regular expression based DoS vulnerability in Action Dispatch <6.1.7.1 and <7.0.4.1 related to the If-None-Match header. A specially crafted HTTP If-None-Match header can cause the regular expression engine to enter a state of catastrophic backtracking, when on a version of Ruby below 3.2.0. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.

Details

Severity LOW
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-1333
Public Exploit ✅ No
Source NVD
Published 2023-01-18
Updated 2026-06-15
Modified 2025-03-31

Affected Packages

Software From version Fixed in
actionpack 7.0.0 7.0.4.1
debian-linux — —
rails 7.0.0 7.0.4.1

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