What’s Vulnerable › Vulnerabilities

CVE-2022-45491

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-03 · updated 2026-06-17
• Weakness: CWE-787

Description

Buffer overflow vulnerability in function json_parse_value in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.

Affected products

• Json.H Project Json.H: before 2022-11-14 — fixed in 2022-11-14

How to fix

Upgrade to a fixed version: Json.H Project Json.H 2022-11-14. Check the vendor advisory for mitigations.

References

• https://github.com/hyrathon/trophies/security/advisories/GHSA-55fm-gm4m-3v3j
• https://github.com/sheredom/json.h/issues/94
• https://github.com/hyrathon/trophies/security/advisories/GHSA-55fm-gm4m-3v3j
• https://github.com/sheredom/json.h/issues/94

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