Vulnerability Description
Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to version 3.17.2, disabling symbol_keys on a reused Oj::Parser instance triggers a heap use-after-free. When symbol_keys is toggled from true to false, opt_symbol_keys_set frees the internal key cache (cache_free) but does not clear the pointer. The next parse call reads from the freed cache via cache_intern, producing a use-after-free. This issue has been fixed in version 3.17.2.
Related Weaknesses (CWE)
References
- https://github.com/ohler55/oj/security/advisories/GHSA-2cw7-v8ff-p88r
- https://github.com/ohler55/oj/security/advisories/GHSA-2cw7-v8ff-p88r
FAQ
What is CVE-2026-54899?
CVE-2026-54899 is a documented vulnerability. Oj (Optimized JSON) is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to version 3.17.2, disabling symbol_keys on a reused Oj::Parser instance triggers a heap use-after-free. When s...
How severe is CVE-2026-54899?
CVSS scoring is not yet available for CVE-2026-54899. Check NVD for updates.
Is there a patch for CVE-2026-54899?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.