5.4 Medium
AI Score
Confidence
High
0.003 Low
EPSS
Percentile
68.5%
An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows …/ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d
github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4
lists.debian.org/debian-lts-announce/2020/02/msg00004.html
lists.debian.org/debian-lts-announce/2020/10/msg00000.html
usn.ubuntu.com/4571-1/
www.debian.org/security/2021/dsa-4918