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.
https://hackmd.io/@haind-pwn/mxml-strtod-locale-stack-overflow
https://hackmd.io/@haind-pwn/cve-2026-110604-mxml-strtod-locale-stack-overflow
https://github.com/michaelrsweet/mxml/commit/367c7ddd3387f65e867d776216de274bcaa3dae1
https://github.com/michaelrsweet/mxml/blob/v4.0.6/mxml-file.c#L1860-L1887
Published: 2026-10-14
Updated: 2026-10-14
Base Score: 2.6
Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:P/A:P
Severity: Low
Base Score: 3.6
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
Severity: Low
Base Score: 2
Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Severity: Low
EPSS: 0.0022