CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2024-21647
High (7.5) in puma puma. EPSS 1.0% chance of exploitation in the next 30 days. Fixed in puma 5.6.8, 6.4.2.
Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. This vulnerability has been fixed in versions 6.4.2 and 5.6.8.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
- CWE
- CWE-444
- Published
- Modified
- Record from
- the NVD, synced
Affected
- puma:puma
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-c2f4-cvqm-65w2 | RubyGems | puma | >=6.0.0 <6.4.2 | 6.4.2 |
| GHSA-c2f4-cvqm-65w2 | RubyGems | puma | <5.6.8 | 5.6.8 |
References
- https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93
- https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2
- https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93
- https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2
- https://lists.debian.org/debian-lts-announce/2024/11/msg00004.html