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Advisory record · GHSA-q28m-8xjw-8vr5

Puma's Keepalive Connections Causing Denial Of Service

CVSS 7.5 HighEPSS 0.016 · 75th percentile

Published by the GitHub Advisory Database at 18 May 2021, 01:27 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
pumaRubyGems<4.3.8 || >=5.0.0, <5.3.14.3.8, 5.3.1
Identifiers
GHSA-q28m-8xjw-8vr5 · CVE-2021-29509
Weakness (CWE)
CWE-400
Tags
Published
18 May 2021
Updated
8 Jul 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.016, the 75th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 11 May 2021, 14:56 UTC Published by the maintainers as a GitHub repository advisory

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.