ruby-lang has 2 CVEs on record. The median CVSS is 8.3 (high), with 1 rated critical.
CVEs per month
Last 12 months, by publish date
1025/101125/111225/120126/010226/020326/030426/040526/050626/060726/070826/080926/09
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 8.3
- Publish → KEV
- —
- Last 90 days
- 0 prev 1
2
Total CVEs
1
Critical
0
CISA KEV
0
Exploited
ruby-lang vulnerabilities
CVEs affecting ruby-lang, newest first. Open any entry for full detail, references, and exploit status.
2 CVEsRSS
CVE-2026-42246High· 7.4Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return "successfully", without s…
▾ Twilightruby-lang · net::imapEPSS 0.31%via NVD
CVE-2026-33210Critical· 9.1Ruby JSON is a JSON implementation for Ruby
Ruby JSON is a JSON implementation for Ruby. From version 2.14.0 to before versions 2.15.2.1, 2.17.1.2, and 2.19.2, a format string injection vulnerability can lead to denial of service attacks or information disclosure, when the allow_d…
▾ Midnightruby-lang · jsonEPSS 0.86%via NVD