CVE-2023-22792: rubyonrails rails Uncontrolled Resource Consumption
Vulnerability summary
CVE-2023-22792 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in rubyonrails rails. EPSS estimates a 1.70% chance of exploitation in the next 30 days, higher than 77.1% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 09-02-2023PublishedVulnerability first disclosed.
- 24-03-2025Last modifiedVulnerability information updated.
Description
A regular expression based DoS vulnerability in Action Dispatch <6.0.6.1,< 6.1.7.1, and <7.0.4.1. Specially crafted cookies, in combination with a specially crafted X_FORWARDED_HOST header 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 All users running an affected release should either upgrade or use one of the workarounds immediately.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.70%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.70% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-1333Inefficient Regular Expression ComplexityThe product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- rails< 2:6.1.7.3+dfsg-1
RubyGems1 product
- actionpack≥ 3.0.0, < 5.2.8.15 | ≥ 6.0.0, < 6.1.7.1 | ≥ 7.0.0, < 7.0.4.1
Rubyonrails1 product
- rails≥ 3.0.0, < 6.0.6.1 | ≥ 6.1.0, < 6.1.7.1 | ≥ 7.0.0, < 7.0.4.1
Ubuntu1 product
- railsAll versions (No fix recorded)
4 vendors · 4 products
References
13 links- github.com/rails/railsPACKAGE