Use After Free Affecting oj package, versions <3.17.3
Threat Intelligence
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Test your applications- Snyk IDSNYK-RUBY-OJ-17393953
- published22 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
NewCVE-2026-54901 (opens in a new tab)How to fix?
Upgrade oj to version 3.17.3 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the parser_mark. An attacker can cause a segmentation fault and potentially crash the application by triggering garbage collection after assigning a custom class to array_class or hash_class and before parsing, leading to dereferencing of a freed object.