CVE-2024-25126
MEDIUMEPSS 98th pctlDescription
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.
How to fix
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Exploit Intelligence
Very high risk: more likely to be exploited than 98% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1333 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-3364 | High | 7.5 | 44% | - | Fix |
| CVE-2024-8124 | High | 7.5 | 40% | - | Fix |
| CVE-2024-2651 | Medium | 6.5 | 33% | - | Fix |
| CVE-2021-32837 | High | 7.5 | 29% | - | Fix |
| CVE-2024-2829 | High | 7.5 | 26% | - | Fix |
| CVE-2022-24713 | High | 7.5 | 14% | - | Fix |
Common questions
How do I fix CVE-2024-25126?
Published advisories record a fix for 97 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2024-25126 being actively exploited?
Not that we know of. CVE-2024-25126 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 35.4% is the estimated probability that it will be exploited in the next 30 days. That is higher than 98% of all scored CVEs.
How severe is CVE-2024-25126?
CVE-2024-25126 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2024-25126 affect?
Published advisories record a fix for pcs (Amazon), pcs-debuginfo (Amazon), pcs-snmp (Amazon), ruby-rack (Debian), and 93 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.