CVE-2025-27221
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
5.5
Description
RHSA-2025:4063: ruby:3.1 security update (Moderate)
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| rocky | 8 | fixed | |
| sles | affected | | |
| rocky | 9 | fixed | |
| debian | forky | fixed | 3.3.7-2 |
| debian | sid | fixed | 3.3.7-2 |
| debian | trixie | fixed | 3.3.7-2 |
| debian | bullseye | fixed | 2.7.4-1+deb11u5 |
| debian | bookworm | fixed | 3.3.15-2+deb12u1 |
| almalinux | 9 | fixed | rubygem-mysql2-doc-0.5.4-1.module_el9.1.0+8+503f6fbd.noarch.rpm |
| rhel | 8 | fixed | |
References
- https://www.cve.org/CVERecord?id=CVE-2025-27221
- https://access.redhat.com/errata/RHSA-2025:4488
- https://access.redhat.com/errata/RHSA-2025:4493
- https://errata.rockylinux.org/RLSA-2025:10217
- https://errata.rockylinux.org/RLSA-2025:4063
- https://www.suse.com/security/cve/CVE-2025-27221.html
- https://errata.rockylinux.org/RLSA-2025:4493
- https://errata.rockylinux.org/RLSA-2025:4488
- https://nvd.nist.gov/vuln/detail/CVE-2025-27221
- https://github.com/ruby/uri/pull/154
- https://github.com/ruby/uri/pull/155
- https://github.com/ruby/uri/pull/156
- https://github.com/ruby/uri/pull/157
- https://hackerone.com/reports/2957667
- https://github.com/ruby/uri
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml
- https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html
- https://www.ruby-lang.org/en/news/2025/02/26/security-advisories
- https://security-tracker.debian.org/tracker/CVE-2025-27221
- https://access.redhat.com/errata/RHSA-2025:10217
- https://bugzilla.redhat.com/2344680
- https://bugzilla.redhat.com/2349699
- https://bugzilla.redhat.com/2349700
- https://errata.almalinux.org/8/ALSA-2025-10217.html
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.