CVE-2024-25126
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).
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 35.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 35.38% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-1333
- Affected
- rack/rack · debian/debian linux
- Source
- security-advisories@github.com
EPSS 35.4% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.