| Name | CVE-2025-27221 |
| Description | In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent leakage of authentication credentials because userinfo is retained even after changing the host. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4082-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ruby2.7 (PTS) | bullseye | 2.7.4-1+deb11u1 | vulnerable |
| bullseye (security) | 2.7.4-1+deb11u5 | fixed |
| ruby3.1 (PTS) | bookworm, bookworm (security) | 3.1.2-7+deb12u1 | vulnerable |
| sid | 3.1.2-8.5 | vulnerable |
| ruby3.3 (PTS) | sid, trixie | 3.3.7-1 | vulnerable |
| rubygems (PTS) | bullseye | 3.2.5-2 | vulnerable |
| bookworm | 3.3.15-2 | vulnerable |
| sid, trixie | 3.6.6-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - ruby3.1 <no-dsa> (Minor issue)
https://github.com/ruby/uri/commit/3675494839112b64d5f082a9068237b277ed1495 (v1.0.3)
https://github.com/ruby/uri/commit/2789182478f42ccbb62197f952eb730e4f02bfc5 (v1.0.3)
https://github.com/ruby/uri/pull/154
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml