Medium severity6.1NVD Advisory· Published Oct 15, 2026· Updated Oct 15, 2026

CVE-2026-111126

Description

catdoc through 0.95 contains an out-of-bounds read vulnerability in the MULRK record handler of process_item() in src/xlsparse.c that allows attackers to read past the static rec buffer via a crafted end column. Attackers can supply a crafted .xls workbook or BIFF stream with a large endcol to xls2csv to disclose adjacent process memory as CSV cells or crash the process.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Catdoc/Catdocllm-fuzzy
Range: <=0.95

Patches

Vulnerability mechanics

References

github.com/vbwagner/catdoc/blob/38a2807d22ce1a08bc39b94e9072a9f8f52cd86f/src/xlsparse.cnvd
hackmd.io/@haind-pwn/catdoc-xls-mulrk-endcol-and-string-count-oob-readnvd
www.vulncheck.com/advisories/catdoc-through-0.95-out-of-bounds-read-in-xls2csv-mulrk-record-handlernvd

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cvss	0.397
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000