{"schema":"threatline.record/2","record":{"id":"CVE-2026-111127","aliases":[],"summary":"catdoc through 0.95 Out-of-Bounds Read via xls2csv copy_unicode_string","details":"catdoc through 0.95 contains an out-of-bounds read vulnerability in copy_unicode_string() in src/xlsparse.c that allows attackers to read past buffers via an unchecked string character count. Attackers can supply a crafted .xls file declaring 0xFFFF two-byte characters in LABEL, STRING, or SST records to disclose adjacent memory through xls2csv output or crash the process.","categories":["Unclassified"],"product":"catdoc","vendor":"catdoc","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-111127","source_modified_at":"2026-10-16T17:10:59.137Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"catdoc","vendor":"catdoc","versions":[{"version":"0","lessThanOrEqual":"0.95","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00129,"percentile":0.02261,"score_date":"2026-10-23"},"published_at":"2026-10-15T18:57:23.479Z","modified_at":"2026-10-16T17:10:59.137Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-111127","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T17:10:59.137Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-111127","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@haind-pwn/catdoc-xls-mulrk-endcol-and-string-count-oob-read","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/vbwagner/catdoc/blob/38a2807d22ce1a08bc39b94e9072a9f8f52cd86f/src/xlsparse.c#L421-L520","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/vbwagner/catdoc","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/catdoc-through-0.95-out-of-bounds-read-via-xls2csv-copy-unicode-string","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T16:31:22.614974Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T17:10:59.137Z","content_hash":"2880d5d5a80c92b3286f30331944ec46d65b4c39a31b60e9e233ad8b3ee2f1f0"}}