{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-54417/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-17T15:01:35.358Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-54417","@id":"https://www.cve.org/CVERecord?id=CVE-2026-54417","description":"An integer overflow in the mtar_next() function in src/microtar.c in rxi microtar 0.1.0 allows a remote attacker to cause a denial of service (uncontrolled CPU consumption / infinite loop) via a crafted tar archive. mtar_next() computes the offset to the next record as round_up(h.size, 512) + sizeof(mtar_raw_header_t) using 32-bit arithmetic. When the header size field is a multiple of 512 in the range 0xFFFFFC01-0xFFFFFE00 (e.g. 0xFFFFFE00), the addition wraps to 0, so mtar_next() seeks to the "},"products":[{"@id":"cpe:2.3:a:rxi:microtar:0.1.0:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:rxi:microtar:0.1.0:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-17T15:01:35.358Z"}]}