CVE-2024-26146
Possible Denial of Service Vulnerability in Rack Header Parsing
02 Description
Possible Denial of Service Vulnerability in Rack Header Parsing
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 1.99% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 80.5% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2024-02-28 23:28Z2 YR AGO
- Last updated
- 2025-02-13 17:41Z1 YR AGO
- Reserved
- 2024-02-14
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-1333Inefficient Regular Expression ComplexityBase
- Data version
- 5.1
- Document digest
- 2e0c1d2abaa23cc468ca46daee092d387095566e8572f4b4a6613e4f50381f78
05 Affected products
06 References
- github.comhttps://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8f
- github.comhttps://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716
- github.comhttps://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582
- github.comhttps://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6f
- github.comhttps://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccd
- discuss.rubyonrails.orghttps://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942
- github.comhttps://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26146.yml
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2024/04/msg00022.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20240510-0006/
07 Fixed in
AlmaLinux 8
- pcs Fixed in 0.10.18-2.el8_10
- pcs-snmp Fixed in 0.10.18-2.el8_10
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- pcs Fixed in 0.11.7-2.el9_4
- pcs-snmp Fixed in 0.11.7-2.el9_4
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- pcs Fixed in 0.10.18-2.el8_10
- pcs-snmp Fixed in 0.10.18-2.el8_10
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- pcs Fixed in 0.11.7-2.el9_4
- pcs-snmp Fixed in 0.11.7-2.el9_4
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- ruby-rack Fixed in 2.2.6.4-1+deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- ruby-rack Fixed in 2.2.7-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- ruby-rack Fixed in 2.2.7-1.1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- ruby-rack Fixed in 2.1.4-5ubuntu1.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- ruby-rack Fixed in 2.2.7-1ubuntu0.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- ruby-rack Fixed in 1.5.2-3+deb8u3ubuntu1~esm8Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- ruby-rack Fixed in 1.6.4-3ubuntu0.2+esm6Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- ruby-rack Fixed in 1.6.4-4ubuntu0.2+esm6Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- ruby-rack Fixed in 2.0.7-2ubuntu0.1+esm5Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 22.04 LTS
- ruby-rack Fixed in 2.1.4-5ubuntu1+esm5Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.