CVE-2022-44571: rack Uncontrolled Resource Consumption
Vulnerability summary
CVE-2022-44571 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in rack. EPSS estimates a 1.50% chance of exploitation in the next 30 days, higher than 74.3% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); 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 18 · Related 14Timeline
- 09-02-2023PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
There is a denial of service vulnerability in the Content-Disposition parsingcomponent of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1, 3.0.0.1. This could allow an attacker to craft an input that can cause Content-Disposition header parsing in Rackto take an unexpected amount of time, possibly resulting in a denial ofservice attack vector. This header is used typically used in multipartparsing. Any applications that parse multipart posts using Rack (virtuallyall Rails applications) are impacted.
CVSS metrics
3 scores · 3 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
EPSS trend
Probability
1.50%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.50% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot 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
- ruby-rack< 2.2.4-3
Rack1 product
- rack≥ 2.0.0, < 2.0.9.2 | ≥ 2.1.0, < 2.1.4.2 | ≥ 2.2.0, < 2.2.6.1 | ≥ 3.0.0.0, < 3.0.4.1
RubyGems1 product
- rack≥ 2.0.0, < 2.0.9.2 | ≥ 2.1.0, < 2.1.4.2 | ≥ 2.2.0, < 2.2.6.1 | ≥ 3.0.0.0, < 3.0.4.1
Ubuntu1 product
- ruby-rack< 1.5.2-3+deb8u3ubuntu1~esm6 | < 1.6.4-3ubuntu0.2+esm4 | < 1.6.4-4ubuntu0.2+esm4 | < 2.0.7-2ubuntu0.1+esm3 | < 2.1.4-5ubuntu1.1 | < 2.1.4-5ubuntu1+esm3
4 vendors · 4 products
