CVE-2024-25126

Name: CVE-2024-25126
Creator: NVD / NIST
Published: 2024-02-29T00:15:51.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 35.38%

Last modified Jun 17, 2026

CVE-2024-25126 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Rack is a modular Ruby web server interface. Carefully crafted content type headers can cause Rack’s media type parser to take much longer than expected, leading to a possible denial of service vulnerability (ReDos 2nd degree polynomial). EPSS estimates a 35.38% chance of exploitation in the next 30 days.

Description

Rack is a modular Ruby web server interface. Carefully crafted content type headers can cause Rack’s media type parser to take much longer than expected, leading to a possible denial of service vulnerability (ReDos 2nd degree polynomial). This vulnerability is patched in 3.0.9.1 and 2.2.8.1.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

35.38%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rack	Rack	>= 0.4, < 2.2.8.1
Rack	Rack	>= 3.0.0, < 3.0.9.1
Debian	Debian Linux	10.0

References

https://discuss.rubyonrails.org/t/denial-of-service-vulnerability-in-rack-content-type-parsing/84941Exploit, Vendor Advisory
https://github.com/rack/rack/commit/6efb2ceea003c4b195815a614e00438cbd543462Patch
https://github.com/rack/rack/commit/d9c163a443b8cadf4711d84bd2c58cb9ef89cf49Patch
https://github.com/rack/rack/security/advisories/GHSA-22f2-v57c-j9cxExploit, Vendor Advisory
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-25126.ymlExploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00022.htmlMailing List
https://security.netapp.com/advisory/ntap-20240510-0005/Third Party Advisory
https://discuss.rubyonrails.org/t/denial-of-service-vulnerability-in-rack-content-type-parsing/84941Exploit, Vendor Advisory
https://github.com/rack/rack/commit/6efb2ceea003c4b195815a614e00438cbd543462Patch
https://github.com/rack/rack/commit/d9c163a443b8cadf4711d84bd2c58cb9ef89cf49Patch
https://github.com/rack/rack/security/advisories/GHSA-22f2-v57c-j9cxExploit, Vendor Advisory
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-25126.ymlExploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00022.htmlMailing List
https://security.netapp.com/advisory/ntap-20240510-0005/Third Party Advisory

Timeline

Published: Feb 29, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-25126?

How severe is CVE-2024-25126?

CVE-2024-25126 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 35.38% probability of exploitation in the next 30 days.

How do I fix CVE-2024-25126?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-25126?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST