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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.016, the 75th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 28 Feb 2020, 19:51 UTC Published by the maintainers as a GitHub repository advisory
Sources
- GitHub Advisory Database: GHSA-33vf-4xgg-9r58
- OSV: GHSA-33vf-4xgg-9r58
- github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58
- github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
- nvd.nist.gov/vuln/detail/CVE-2020-5249
- github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3
- github.com/puma/puma
- github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2020-5249.yml
- lists.fedoraproject.org/archives/list/[email protected]/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK
- lists.fedoraproject.org/archives/list/[email protected]/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK
- lists.fedoraproject.org/archives/list/[email protected]/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD
- owasp.org/www-community/attacks/HTTP_Response_Splitting