{"id":"CVE-2026-3664","summary":"xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds","details":"A vulnerability was determined in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::compound_document::read_directory of the file source/detail/cryptography/compound_document.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to out-of-bounds read. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 147. Applying a patch is advised to resolve this issue.","modified":"2026-07-15T01:49:15.727265895Z","published":"2026-03-07T14:32:12.856Z","database_specific":{"cwe_ids":["CWE-119","CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3664.json","cna_assigner":"VulDB"},"references":[{"type":"WEB","url":"https://github.com/xlnt-community/xlnt/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3664.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3664"},{"type":"ADVISORY","url":"https://vuldb.com/?id.349553"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.764646"},{"type":"REPORT","url":"https://github.com/xlnt-community/xlnt/issues/141"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.349553"},{"type":"FIX","url":"https://github.com/xlnt-community/xlnt/pull/147"},{"type":"EVIDENCE","url":"https://github.com/oneafter/0128/blob/main/xl5/repro"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/xlnt-community/xlnt","events":[{"introduced":"8b28e662cbd9e6c2ff3e020a8a163564cbc48e42"},{"last_affected":"3b25b084eab473bb6009b8e3d03ba5ff10bb4891"}],"database_specific":{"extracted_events":[{"introduced":"1.6.0"},{"last_affected":"1.6.0"},{"introduced":"1.6.1"},{"last_affected":"1.6.1"},{"introduced":"0"}],"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:xlnt-community:xlnt:*:*:*:*:*:*:*:*"}}],"versions":["1.6.0","1.6.1","v1.6.1","v1.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3664.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"}]}