{"id":"CVE-2026-111273","published":"2026-10-15T22:19:28.333","lastModified":"2026-10-16T20:17:19.853","description":"unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.","cvssScore":6.1,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","cwes":["CWE-193"],"vendors":[],"products":[],"references":[{"url":"https://github.com/selmf/unarr","tags":[]},{"url":"https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/tar/parse-tar.c#L242-L254","tags":[]},{"url":"https://hackmd.io/@haind-pwn/unarr-tar-zip-oob","tags":[]},{"url":"https://www.vulncheck.com/advisories/unarr-through-1.1.1-off-by-one-heap-buffer-overflow-via-tar-get-name","tags":[]},{"url":"https://hackmd.io/@haind-pwn/cve-2026-111273-111274-unarr-tar-zip-oob","tags":[]}],"exploitRefs":[{"url":"https://github.com/selmf/unarr","tags":[]},{"url":"https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/tar/parse-tar.c#L242-L254","tags":[]}],"hasPoc":true,"ai":null}