Medium severity5.3NVD Advisory· Published Feb 29, 2024· Updated Jun 17, 2026
CVE-2024-26146
CVE-2024-26146
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
rackRubyGems | >= 3.0.0, < 3.0.9.1 | 3.0.9.1 |
rackRubyGems | >= 2.2.0, < 2.2.8.1 | 2.2.8.1 |
rackRubyGems | >= 2.1.0, < 2.1.4.4 | 2.1.4.4 |
rackRubyGems | < 2.0.9.4 | 2.0.9.4 |
Affected products
41- osv-coords38 versionspkg:apk/chainguard/kube-fluentd-operatorpkg:apk/chainguard/kube-fluentd-operator-compatpkg:apk/chainguard/kube-fluentd-operator-default-configpkg:apk/chainguard/kube-fluentd-operator-oci-entrypointpkg:apk/chainguard/logstashpkg:apk/chainguard/logstash-compatpkg:apk/chainguard/logstash-env2yamlpkg:apk/chainguard/logstash-jre-bcfipspkg:apk/chainguard/logstash-jre-bcfips-compatpkg:apk/chainguard/logstash-jre-bcfips-env2yamlpkg:apk/chainguard/logstash-jre-bcfips-with-output-opensearchpkg:apk/chainguard/logstash-with-output-opensearchpkg:apk/chainguard/ruby3.2-rackpkg:apk/chainguard/ruby3.2-rack-2.2pkg:apk/wolfi/kube-fluentd-operatorpkg:apk/wolfi/kube-fluentd-operator-compatpkg:apk/wolfi/kube-fluentd-operator-default-configpkg:apk/wolfi/kube-fluentd-operator-oci-entrypointpkg:apk/wolfi/logstashpkg:apk/wolfi/logstash-compatpkg:apk/wolfi/logstash-env2yamlpkg:apk/wolfi/logstash-with-output-opensearchpkg:apk/wolfi/ruby3.2-rackpkg:apk/wolfi/ruby3.2-rack-2.2pkg:deb/ubuntu/[email protected]?arch=source&distro=manticpkg:gem/rackpkg:rpm/almalinux/pcspkg:rpm/almalinux/pcs-snmppkg:rpm/opensuse/rubygem-rack&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/rubygem-rack&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/rubygem-rack-2.2&distro=openSUSE%20Tumbleweedpkg:rpm/suse/rubygem-rack&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2pkg:rpm/suse/rubygem-rack&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3pkg:rpm/suse/rubygem-rack&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4pkg:rpm/suse/rubygem-rack&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP5pkg:rpm/suse/rubygem-rack&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/rubygem-rack&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/rubygem-rack-1_4&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Containers%2012
< 1.18.2-r3+ 37 more
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 8.13.2-r0
- (no CPE)range: < 8.13.2-r0
- (no CPE)range: < 8.13.2-r0
- (no CPE)range: < 8.13.2-r0
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 3.0.9.1-r0
- (no CPE)range: < 2.2.8.1-r0
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 1.18.2-r3
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 8.12.2-r2
- (no CPE)range: < 3.0.9.1-r0
- (no CPE)range: < 2.2.8.1-r0
- (no CPE)range: < 2.2.4-3ubuntu0.1
- (no CPE)range: >= 3.0.0, < 3.0.9.1
- (no CPE)range: < 0.11.7-2.el9_4
- (no CPE)range: < 0.11.7-2.el9_4
- (no CPE)range: < 2.0.8-150000.3.21.2
- (no CPE)range: < 3.0.9.1-1.1
- (no CPE)range: < 2.2.8.1-1.1
- (no CPE)range: < 2.0.8-150000.3.21.2
- (no CPE)range: < 2.0.8-150000.3.21.2
- (no CPE)range: < 2.0.8-150000.3.21.2
- (no CPE)range: < 2.0.8-150000.3.21.2
- (no CPE)range: < 1.6.13-3.22.1
- (no CPE)range: < 1.6.13-3.22.1
- (no CPE)range: < 1.4.5-9.3.1
Patches
Vulnerability mechanics
References
11- github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716nvdPatchWEB
- github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582nvdPatchWEB
- github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6fnvdPatchWEB
- github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccdnvdPatchWEB
- discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942nvdVendor AdvisoryWEB
- github.com/advisories/GHSA-54rr-7fvw-6x8fghsaADVISORY
- github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8fnvdVendor AdvisoryWEB
- github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26146.ymlnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2024-26146ghsaADVISORY
- security.netapp.com/advisory/ntap-20240510-0006/nvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2024/04/msg00022.htmlnvdMailing List
News mentions
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