{"id":"CVE-2026-109380","published":"2026-10-12T21:17:11.153","lastModified":"2026-10-16T19:18:44.867","description":"modern-tar 0.3.5 through 0.8.5 contains a memory exhaustion vulnerability that allows attackers to produce negative entry sizes via non-octal bytes parsed by readOctal(). Attackers can supply a crafted, optionally gzip-compressed, archive to unpackTar() that buffers chunks indefinitely, exhausting process memory and suppressing later entries.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-1284"],"vendors":[],"products":[],"references":[{"url":"https://github.com/ayuhito/modern-tar","tags":[]},{"url":"https://github.com/ayuhito/modern-tar/blob/v0.8.5/src/tar/encoding.ts","tags":[]},{"url":"https://github.com/ayuhito/modern-tar/commit/181c8cb75351867535057817ada4802a90fe416e","tags":[]},{"url":"https://github.com/ayuhito/modern-tar/pull/195","tags":[]},{"url":"https://www.vulncheck.com/advisories/modern-tar-0.3.5-through-0.8.5-memory-exhaustion-via-malformed-octal-size-field","tags":[]}],"exploitRefs":[{"url":"https://github.com/ayuhito/modern-tar","tags":[]},{"url":"https://github.com/ayuhito/modern-tar/blob/v0.8.5/src/tar/encoding.ts","tags":[]},{"url":"https://github.com/ayuhito/modern-tar/commit/181c8cb75351867535057817ada4802a90fe416e","tags":[]},{"url":"https://github.com/ayuhito/modern-tar/pull/195","tags":[]}],"hasPoc":true,"ai":null}