CVE-2026-71267

microtar's mtar_write_file_header and mtar_write_dir_header functions (src/microtar.c) copy a caller-supplied entry name into the 100-byte field of a stack-allocated mtar_header_t via strcpy(h.name, name), with no check that strlen(name) is less than 100 before the copy.

Score

CVSS 3.1 9.8 Critical

Status

Deferred - 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Published

2026-08-05

Last modified

2026-10-24

Weaknesses

CWE-121

Affected products

• Microtar (Rxi)

References

• https://github.com/rxi/microtar
• https://github.com/rxi/microtar/blob/master/src/microtar.c