CVE-2026-110604
Mini-XML 4.0.0 through 4.0.6 Stack Out-of-Bounds Write via mxml_strtod()
Michael R Sweet Mini-XML
CVSS
2.0LowExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 14 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- Mini-XMLaffected: 4.0.0 through 4.0.6CVE List
References 5
- github.com/michaelrsweet/mxml/commit/367c7ddd3387f65e867d776216de274bcaa3dae1Fixvia CVE List
- hackmd.io/@haind-pwn/mxml-strtod-locale-stack-overflowAdvisoryvia CVE List
- vulncheck.com/advisories/mini-xml-4.0.0-through-4.0.6-stack-out-of-bounds-write-via-mxml-strtodAdvisoryvia CVE List
- hackmd.io/@haind-pwn/cve-2026-110604-mxml-strtod-locale-stack-overflowExploitvia CVE List
- github.com/michaelrsweet/mxml/blob/v4.0.6/mxml-file.c#L1860-L1887Referencevia CVE List