What’s Vulnerable › Vulnerabilities

CVE-2023-36617

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-29 · updated 2026-06-17
• Weakness: CWE-1333

Description

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.

Affected products

• ruby-lang URI: before 0.10.3; from 0.11.0 before 0.12.2 — fixed in 0.10.3, 0.12.2

How to fix

Upgrade to a fixed version: ruby-lang URI 0.10.3, 0.12.2. Check the vendor advisory for mitigations.

References

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QA6XUKUY7B5OLNQBLHOT43UW7C5NIOQQ/
• https://security.netapp.com/advisory/ntap-20230725-0002/
• https://www.ruby-lang.org/en/news/2023/06/29/redos-in-uri-CVE-2023-36617/
• https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QA6XUKUY7B5OLNQBLHOT43UW7C5NIOQQ/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/
• https://security.netapp.com/advisory/ntap-20230725-0002/
• https://www.ruby-lang.org/en/news/2023/06/29/redos-in-uri-CVE-2023-36617/

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