{"schema":"threatline.record/2","record":{"id":"CVE-2026-110600","aliases":[],"summary":"xlsxio through 0.2.37 NULL Pointer Dereference via Worksheet Relationship Without Id","details":"xlsxio through 0.2.37 contains a NULL pointer dereference vulnerability in main_sheet_get_sheetfile_expat_callback_element_start() in lib/xlsxio_read.c that allows attackers to crash applications via crafted files. Attackers can supply a .xlsx file whose workbook.xml.rels contains a worksheet Relationship lacking an Id attribute, crashing the process when xlsxioread_sheet_open() is called.","categories":["Unclassified"],"product":"xlsxio","vendor":"brechtsanders","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110600","source_modified_at":"2026-10-14T20:43:54.196Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"xlsxio","vendor":"brechtsanders","versions":[{"version":"0","lessThanOrEqual":"0.2.37","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00237,"percentile":0.13919,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:16:42.374Z","modified_at":"2026-10-14T20:43:54.196Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110600","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T20:43:54.196Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110600","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/brechtsanders/xlsxio/issues/151","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/brechtsanders/xlsxio/blob/0.2.37/lib/xlsxio_read.c#L851-L866","tags":["technical-description"]},{"source":"CVE List","url":"https://hackmd.io/@haind-pwn/xlsxio-relationship-missing-id-null-deref","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/xlsxio-through-0.2.37-null-pointer-dereference-via-worksheet-relationship-without-id","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T20:43:41.729380Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T20:43:54.196Z","content_hash":"fae2e2f43fd3a1abacd53bf7854a3cb2b5759eaf7ed333e5e36bf5855f0628b5"}}