{"cve":"CVE-2023-27530","nvd":{"published":"2023-03-10T22:15:10.497","modified":"2026-10-24T13:10:00.147","status":"Modified","description":"A DoS vulnerability exists in Rack <v3.0.4.2, <v2.2.6.3, <v2.1.4.3 and <v2.0.9.3 within in the Multipart MIME parsing code in which could allow an attacker to craft requests that can be abuse to cause multipart parsing to take longer than expected.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770","CWE-400"],"references":["https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388","https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html","https://security.netapp.com/advisory/ntap-20231208-0015/","https://www.debian.org/security/2023/dsa-5530","https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388"],"products":["debian:debian_linux","rack:rack"],"source":"nvd","synced_at":"2026-10-24T16:53:27.712498749+00:00"},"epss":{"cve":"CVE-2023-27530","score":0.0183,"percentile":0.78715,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-3h57-hmj3-gj3p","url":"https://osv.dev/vulnerability/GHSA-3h57-hmj3-gj3p","summary":"Rack has possible DoS Vulnerability in Multipart MIME parsing","modified":"2025-02-13T19:03:04.896728Z","packages":[{"ecosystem":"RubyGems","name":"rack","purl":"pkg:gem/rack","ranges":["<2.0.9.3"],"fixed":["2.0.9.3"]},{"ecosystem":"RubyGems","name":"rack","purl":"pkg:gem/rack","ranges":[">=2.1.0 <2.1.4.3"],"fixed":["2.1.4.3"]},{"ecosystem":"RubyGems","name":"rack","purl":"pkg:gem/rack","ranges":[">=2.2.0 <2.2.6.3"],"fixed":["2.2.6.3"]},{"ecosystem":"RubyGems","name":"rack","purl":"pkg:gem/rack","ranges":[">=3.0.0 <3.0.4.2"],"fixed":["3.0.4.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}