Bug 2553708 (CVE-2026-111127) - CVE-2026-111127 catdoc: catdoc: Denial of Service via crafted Excel file
Summary: CVE-2026-111127 catdoc: catdoc: Denial of Service via crafted Excel file
Keywords:
Status: NEW
Alias: CVE-2026-111127
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2554037
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-15 19:12 UTC by OSIDB Bzimport
Modified: 2026-10-16 12:07 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-15 19:12:46 UTC 
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.
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