Low severity · published Oct 14, 2026
CVE-2026-110604
Mini-XML 4.0.0 through 4.0.6 Stack Out-of-Bounds Write via mxml_strtod()
3.6
CVSS
0.2%
EPSS
No
On KEV
Description
Mini-XML 4.0.0 through 4.0.6 contains an off-by-one stack out-of-bounds write in mxml_strtod() when the locale decimal point is not '.'. Attackers can supply XML with a 63-digit REAL value followed by '.' to write a NUL byte past the 64-byte stack buffer, corrupting stack memory or crashing the process.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
Attack vector
Local
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
Mini-XML · Michael R Sweet
4.0.0 through 4.0.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110604
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110604
third-party-advisory
https://hackmd.io/@haind-pwn/mxml-strtod-locale-stack-overflow
technical-description
https://github.com/michaelrsweet/mxml/blob/v4.0.6/mxml-file.c#L1860-L1887
patch
https://github.com/michaelrsweet/mxml/commit/367c7ddd3387f65e867d776216de274bcaa3dae1
third-party-advisory
https://www.vulncheck.com/advisories/mini-xml-4.0.0-through-4.0.6-stack-out-of-bounds-write-via-mxml-strtod