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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388 Patch, Vendor Advisory
- https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388 Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · rack, debianNVD modified 2026-10-24 13:10
Affected (CPE criteria) 3
cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 8
- https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388 Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20231208-0015/
- https://www.debian.org/security/2023/dsa-5530 Third Party Advisory
- https://discuss.rubyonrails.org/t/cve-2023-27530-possible-dos-vulnerability-in-multipart-mime-parsing/82388 Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/04/msg00017.html Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20231208-0015/
- https://www.debian.org/security/2023/dsa-5530 Third Party Advisory