Heap-based Buffer Overflow Affecting oj package, versions <3.17.3
Threat Intelligence
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Test your applications- Snyk IDSNYK-RUBY-OJ-17393869
- published22 Jun 2026
- disclosed19 Jun 2026
- creditUnknown
Introduced: 19 Jun 2026
NewCVE-2026-54896 (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 Heap-based Buffer Overflow in the fill_indent function when serializing Exception objects with a large indentation value. An attacker can corrupt adjacent heap memory and potentially execute arbitrary code or cause a crash by supplying crafted input with excessively large indent values during serialization.
Workaround
This vulnerability can be mitigated by avoiding the use of extreme indentation values and not exposing the indentation option to untrusted users.