URI is a module providing classes to handle Uniform Resource Identifiers. In versions 0.12.4 and earlier (bundled in Ruby 3.2 series) 0.13.2 and earlier (bundled in Ruby 3.3 series), 1.0.3 and earlier (bundled in Ruby 3.4 series), when using the + operator to combine URIs, sensitive information like passwords from the original URI can be leaked, violating RFC3986 and making applications vulnerable to credential exposure. This is a a bypass for the fix to CVE-2025-27221 that can expose user credentials. This issue has been fixed in versions 0.12.5, 0.13.3 and 1.0.4.
CVE-2025-61594
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation1% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 40.5%
- KEV
- Not listed
Published
December 30, 2025
Last Modified
April 16, 2026
References (4)
- security-advisories@githubhttps://github.com/advisories/GHSA-22h5-pq3x-2gf2
- security-advisories@githubhttps://github.com/ruby/uri/security/advisories/GHSA-j4pr-3wm6-xx2r
- security-advisories@githubhttps://hackerone.com/reports/2957667
- security-advisories@githubhttps://www.ruby-lang.org/en/news/2025/02/26/security-advisories
Patch Availability(4)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | ruby2.7-doc (2.7.0-5ubuntu1.18+esm4) @ focal | 2026-05-21 | ubuntu |
| redhat | ruby-0:3.3.10-11.el10_1 | 2025-12-11 | redhat |
| redhat | ruby:3.3-9070020251113101221.9 | 2025-12-10 | redhat |
| redhat | ruby:3.3-8100020251124151715.489197e6 | 2025-12-10 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
RubyGems(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| uri | 1.0.0, 1.0.1, 1.0.2, 1.0.3 | 1.0.4 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(5)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
- Microsoft MSRCCVE-2025-615942026-01-03
URI Credential Leakage Bypass over CVE-2025-27221
- Red HatRHSA-2025:23062MODERATE2025-12-30
RHSA-2025:23062 — Moderate
- Red HatRHSA-2025:23063MODERATE2025-12-30
RHSA-2025:23063 — Moderate
- Red HatRHSA-2025:23141MODERATE2025-12-30
RHSA-2025:23141 — Moderate
- UbuntuUSN-8137-1LOW
Ruby vulnerability
Data Freshness Timeline
(refreshed 10× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 112 total refreshes for this CVE.
- 2026-07-23 03:00 UTCEG score recompute
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Related CVEs(same vendor + same CWE)
Same vendor
10 shownmsrc · redhat
Same CWE
10 shownCWE-200 · CWE-212
Frequently asked(5)
What is CVE-2025-61594?
When was CVE-2025-61594 disclosed?
Is CVE-2025-61594 actively exploited?
What is the CVSS score of CVE-2025-61594?
How do I remediate CVE-2025-61594?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-61594
Is Your Infrastructure Affected by CVE-2025-61594?
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