CVE-2026-33210
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 to parse user supplied documents. This issue has been patched in versions 2.15.2.1, 2.17.1.2, and 2.19.2.
Scoring
- Severity
- HIGH
- CVSS base score
- 9.1
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
- EPSS probability
- 0.86%
- CWE
- CWE-134
- Published
- 2026-03-20
- Last modified
- 2026-08-21
Affected products
- ruby json
- ruby json
- ruby json
Weakness type
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