Low severity · published Apr 19, 2025
CVE-2023-30421
mystrtod in mjson 1.2.7 requires more than a billion iterations during processing of certain digit strings such as 8891110122900e913013935755114
2.9
CVSS
0.2%
EPSS
No
On KEV
Description
mystrtod in mjson 1.2.7 requires more than a billion iterations during processing of certain digit strings such as 8891110122900e913013935755114.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Local
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MJ
mjson · mjson project
1.2.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-30421
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-30421
github.com
https://github.com/boofish/json_bugs/blob/main/mjson
github.com
https://github.com/cesanta/mjson/releases
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