{"id":"CVE-2026-111273","revision":"6cefda681f0b4b7e9b89ed3d114d8b84","records":[{"revision":"6cefda681f0b4b7e9b89ed3d114d8b84","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111273","aliases":[],"title":"unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_name","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.","state":0,"publishedAt":"2026-10-15T21:43:19.717+00:00","modifiedAt":"2026-10-16T19:39:08.849+00:00","affected":[{"ecosystem":"Vendor product","name":"unarr","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"selmf\",\n                    \"product\": \"unarr\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"1.1.1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/selmf/unarr\",\n                    \"repo\": \"https://github.com/selmf/unarr\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","score":6.1,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haind-pwn/unarr-tar-zip-oob","https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/tar/parse-tar.c#L242-L254","https://github.com/selmf/unarr","https://www.vulncheck.com/advisories/unarr-through-1.1.1-off-by-one-heap-buffer-overflow-via-tar-get-name"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111273","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111273","identifiers":["CVE-2026-111273"]},"retained":false,"historicalAffected":[]}],"coverage":[]}