Answer in brief
CVE-2023-36617 records a Medium severity (CVSS 5.3) vulnerability in URI gem has ReDoS vulnerability. The current sources do not mark it as known exploited. The current feed maps uri (rubygems), uri (rubygems), uri (rubygems), uri (rubygems). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps uri (rubygems), uri (rubygems), uri (rubygems), uri (rubygems). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| urirubygems | >=0.10.1 <0.10.3 | 0.10.3 |
| urirubygems | >=0.12.0 <0.12.2 | 0.12.2 |
| urirubygems | >=0.11.0 <0.11.2 | 0.11.2 |
| urirubygems | >=0 <0.10.0.3 | 0.10.0.3 |
Published upstream
Jun 29, 2023
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
A ReDoS issue was discovered in the URI component before 0.12.2 for Ruby. The URI parser mishandles invalid URLs that have specific characters. There is an increase in execution time for parsing strings to URI objects with `rfc2396_parser.rb` and `rfc3986_parser.rb`. NOTE: this issue exists becuse of an incomplete fix for CVE-2023-28755. Version 0.10.3 is also a fixed version. [The Ruby advisory recommends](https://www.ruby-lang.org/en/news/2023/06/29/redos-in-uri-CVE-2023-36617/) updating the uri gem to 0.12.2. In order to ensure compatibility with the bundled version in older Ruby series, you may update as follows instead: - For Ruby 3.0: Update to uri 0.10.3 - For Ruby 3.1 and 3.2: Update to uri 0.12.2. You can use gem update uri to update it. If you are using bundler, please add gem `uri`, `>= 0.12.2` (or other version mentioned above) to your Gemfile.
Quoted source text, attributed separately from HOL analysis.