# oj (RubyGems) vulnerabilities

11 known vulnerabilities (1 high, 7 medium, 3 low), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://rubygems.org/gems/oj

## Advisories (11)

### [CVE-2026-54903](https://cve.now/CVE-2026-54903): Oj: Integer Overflow in Oj.load 2GB String Handling

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54902](https://cve.now/CVE-2026-54902): Oj: Use-After-Free in Oj::Parser SAJ Long Key Callback

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54901](https://cve.now/CVE-2026-54901): Oj: Use-After-Free in Oj::Parser array\_class/hash\_class GC Marking

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54900](https://cve.now/CVE-2026-54900): Oj: Negative-Size memcpy in Oj::Parser create\_id Attribute Handling

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54898](https://cve.now/CVE-2026-54898): Oj: Use-After-Free in Oj::Parser SAJ Callback via Input Mutation

- Severity: Low 2.1
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54897](https://cve.now/CVE-2026-54897): Oj : Use-After-Free in Oj::Doc Iterators via Reentrant Close

- Severity: Low 2.1
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54896](https://cve.now/CVE-2026-54896): Oj: Heap Buffer Overflow in Oj.dump Exception Serialization via Large Indent

- Severity: Low 2.1
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54592](https://cve.now/CVE-2026-54592): Oj: Stack Buffer Overflow in Oj::Doc#each\_child via Deeply Nested Input

- Severity: High 7.5
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54502](https://cve.now/CVE-2026-54502): Oj: Stack Buffer Overflow in Oj.dump via Large Indent

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54500](https://cve.now/CVE-2026-54500): Oj: intern.c form\_attr has an uninitialized stack read

- Severity: Medium 5.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.3.

### [CVE-2026-54899](https://cve.now/CVE-2026-54899): Oj: Use-After-Free in Oj::Parser Symbol Key Cache Toggle

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 3.17.2.

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