CVE-2022-45491

HIGHNVD 7.87.8—

7.8

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.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 33.8%
KEV: Not listed

Published

February 3, 2023

Last Modified

March 26, 2025

References (4)

cve@mitrehttps://github.com/hyrathon/trophies/security/advisories/GHSA-55fm-gm4m-3v3j
cve@mitrehttps://github.com/sheredom/json.h/issues/94
af854a3a-2127-422b-91ae-364da2661108https://github.com/hyrathon/trophies/security/advisories/GHSA-55fm-gm4m-3v3j
af854a3a-2127-422b-91ae-364da2661108https://github.com/sheredom/json.h/issues/94

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
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2026-05-27 13:39 UTCepss_batch
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2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 07:25 UTCEG score recompute

Frequently asked(5)

What is CVE-2022-45491?

CVE-2022-45491 is a high vulnerability published on February 3, 2023. Buffer overflow vulnerability in function jsonparsevalue in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.

When was CVE-2022-45491 disclosed?

CVE-2022-45491 was first published in the National Vulnerability Database on February 3, 2023, with the most recent update on March 26, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-45491 actively exploited?

CVE-2022-45491 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-45491?

CVE-2022-45491 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2022-45491?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-45491, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2022-45491

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-45491?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (4)

Frequently asked(5)

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