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CVE-2023-40175

7.3
HIGHCVSS v3.1 Base Score
0.38%
LOW RiskEPSS (60th percentile)

Puma is a Ruby/Rack web server built for parallelism. Prior to versions 6.3.1 and 5.6.7, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers in a way that allowed HTTP request smuggling. Severity of this issue is highly dependent on the nature of the web site using puma is. This could be caused by either incorrect parsing of trailing fields in chunked transfer encoding bodies or by parsing of blank/zero-length Content-Length headers. Both issues have been addressed and this vulnerability has been fixed in versions 6.3.1 and 5.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Published: 8/18/2023
Modified: 11/21/2024
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Vulnerability Summary

CVSS v3 Score

7.3HIGH

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

EPSS Score (Exploitation Probability)

0.38%LOW Exploitation Risk
60th percentile

This vulnerability has a 0.38% probability of being exploited in the next 30 days, ranking higher than 60% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-444)

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Similar SeverityHIGH