Vendor
Ruby vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in Ruby: 1 in the last 7 days and 6 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-125110, was published on 9 November 2026. 1 vulnerability in the last four weeks, level on the four before (1).
- Last 7 days
- 1
- Last 90 days
- 6
- Critical, all time
- 0
- Exploited in the wild
- 0
About Ruby
The maintainers and community behind the Ruby programming language.
Latest Ruby vulnerabilities
- CVE-2026-125110: Rack::Static header_rules bypass via dot-segment normalization mismatchmediumCVSS 5.3EPSS 0.3%
- CVE-2026-116695: Crass CSS parser bad URL tokenizer bypass in sanitizersmediumCVSS 4EPSS 0.4%
- CVE-2026-12545: rubygem-hammer_cli command injection via insecure editor invocationmediumCVSS 6.7EPSS 0.5%
- CVE-2026-82455: RubyGems symlink-following behavior in gem extractioninfo
- CVE-2026-80213: Ruby resolv DNS label encoding bypassmediumCVSS 4EPSS 0.4%
- CVE-2026-80212: Ruby resolv memory exhaustion in DNS response parsinghighCVSS 7.5EPSS 0.6%
- CVE-2026-38969: Ruby WEBrick request smuggling via Content-Length in trailersinfoCVSS 0
- CVE-2025-10990: Ruby REXML ReDoS in hex numeric character referenceshighCVSS 7.5EPSS 0.4%
Most severe Ruby vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-80212: Ruby resolv memory exhaustion in DNS response parsinghighCVSS 7.5EPSS 0.6%
- CVE-2025-10990: Ruby REXML ReDoS in hex numeric character referenceshighCVSS 7.5EPSS 0.4%
- CVE-2026-12545: rubygem-hammer_cli command injection via insecure editor invocationmediumCVSS 6.7EPSS 0.5%
- CVE-2026-125110: Rack::Static header_rules bypass via dot-segment normalization mismatchmediumCVSS 5.3EPSS 0.3%
- CVE-2026-116695: Crass CSS parser bad URL tokenizer bypass in sanitizersmediumCVSS 4EPSS 0.4%
- CVE-2026-80213: Ruby resolv DNS label encoding bypassmediumCVSS 4EPSS 0.4%
- CVE-2026-38969: Ruby WEBrick request smuggling via Content-Length in trailersinfoCVSS 0
- CVE-2026-82455: RubyGems symlink-following behavior in gem extractioninfo
Vulnerabilities per week
1 vulnerability in the last four weeks, level on the four before (1). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 3 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 1 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 1 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Ruby vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/ruby)<a href="https://junglewise.ai/threats/vendors/ruby"><img src="https://junglewise.ai/threats/vendors/ruby/badge.svg" alt="Ruby vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/ruby.json, and this page as text at https://junglewise.ai/threats/vendors/ruby.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Ruby vulnerabilities", https://junglewise.ai/threats/vendors/ruby, 12 November 2026.