CVE-2024-26146

MEDIUM
Published Feb 29, 2024 Modified Feb 14, 2025 CWE-1333

Description

Rack is a modular Ruby web server interface. Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue. Accept and Forwarded headers are impacted. Ruby 3.2 has mitigations for this problem, so Rack applications using Ruby 3.2 or newer are unaffected. This vulnerability is fixed in 2.0.9.4, 2.1.4.4, 2.2.8.1, and 3.0.9.1.

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CVSS v3.1 Score

5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-1333 CWE-1333

Affected Products

Vendor Product
rack rack
rack rack
rack rack
debian debian_linux

References

Advisories & Patches

https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942 https://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716 https://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582 https://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6f https://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccd https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8f https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942 https://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716 https://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582 https://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6f https://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccd https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8f

Frequently Asked Questions

What is CVE-2024-26146? +
Rack is a modular Ruby web server interface. Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue. Accept and Forwarded headers are impacted. Ruby 3.2 has mitigations for this problem, so Rack applications using Ruby 3.2 or newer are unaffected. This vulnerability is fixed in 2.0.9.4, 2.1.4.4, 2.2.8.1, and 3.0.9.1. It has a CVSS v3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2024-26146? +
CVE-2024-26146 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2024-26146? +
CVE-2024-26146 affects products from debian, rack, specifically: debian_linux, rack. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-26146? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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