{"id":"CVE-2026-103242","published":"2026-09-30T12:17:12.653","lastModified":"2026-09-30T17:16:42.773","description":"A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.","cvssScore":7.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-103242","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543866","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}