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CVE-2023-30421

Date: April 18, 2025

mystrtod in mjson 1.2.7 requires more than a billion iterations during processing of certain digit strings such as 8891110122900e913013935755114.

Severity Score

Related Resources (4)

https://github.com/cesanta/mjson/releases
https://nvd.nist.gov/vuln/detail/CVE-2023-30421
https://github.com/boofish/json_bugs/blob/main/mjson
https://www.mend.io/vulnerability-database/CVE-2023-30421

Severity Score

Weakness Type (CWE)

Inefficient Algorithmic Complexity

CWE-407

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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