CVE-2022-45491

HIGH

7.8

CVSS Score

Published: February 3, 2023 at 12:00 AM UTC

Updated: June 17, 2026 at 05:10 AM UTC

1 product affected across 1 vendorJson.h

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Json.h · JSON H Project

95%

v < 2022-11-14

Affected range stops below 2022-11-14, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory

Source: [email protected]

https://github.com/hyrathon/trophies/security/advisories/GHSA-55fm-gm4m-3v3j

Third Party Advisory

Source: [email protected]

https://github.com/sheredom/json.h/issues/94

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-787CWE-122

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