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ruby-lang json vulnerabilities

1 published CVE affecting ruby-lang json, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

Total
1
Critical
0
High
1
Medium
0
Low
0
Unscored
0
CISA KEV
0

Latest ruby-lang json CVEs

Newest publication first

  1. CVE-2026-33210 Ruby JSON has a format string injection vulnerability

    Published
    HighCVSS 8.3 EPSS 0.89% PoC

    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_duplicate_key: false parsing option is used...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.