CVE-2026-111126
CVE-2026-111126 · catdoc through 0.95 Out-of-Bounds Read in xls2csv MULRK Record Handler
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.9 · Medium · EPSS 0.2%
- Published
- Updated
Stack: system
Affected products and versions
catdoc
- Versions
- ≥ 0, ≤ 0.95: Affected (custom)
No fix published
catdoc Debian:12
- Versions
- 1:0.95-5
- 1:0.95-6
- 1:0.95-6~deb12u1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Debian:13
- Versions
- 1:0.95-6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Debian:14
- Versions
- 1:0.95-6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:Pro:16.04:LTS
- Versions
- 0.94.4-1.1
- 1:0.94.3~git20151007.fd634c2+dfsg-2
- 1:0.94.3~git20151007.fd634c2+dfsg-3
- 1:0.94.3~git20160113.dbc9ec6+dfsg-1
- 1:0.94.3~git20160113.dbc9ec6+dfsg-1+deb9u1build0.16.04.1
- 1:0.94.3~git20160113.dbc9ec6+dfsg-1+deb9u1ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:Pro:18.04:LTS
- Versions
- 1:0.95-3
- 1:0.95-4.1
- 1:0.95-4.1ubuntu0.18.04.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:Pro:20.04:LTS
- Versions
- 1:0.95-4.1
- 1:0.95-4.1ubuntu0.20.04.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:Pro:22.04:LTS
- Versions
- 1:0.95-4.1
- 1:0.95-4.2
- 1:0.95-5
- 1:0.95-5ubuntu0.22.04.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:Pro:24.04:LTS
- Versions
- 1:0.95-5
- 1:0.95-5build1
- 1:0.95-5ubuntu0.24.04.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:26.10
- Versions
- 1:0.95-6build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
catdoc Ubuntu:26.04:LTS
- Versions
- 1:0.95-6
- 1:0.95-6build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://hackmd.io/@haind-pwn/catdoc-xls-mulrk-endcol-and-string-count-oob-read
- https://github.com/vbwagner/catdoc/blob/38a2807d22ce1a08bc39b94e9072a9f8f52cd86f/src/xlsparse.c#L314-L328
- https://github.com/vbwagner/catdoc
- https://www.vulncheck.com/advisories/catdoc-through-0.95-out-of-bounds-read-in-xls2csv-mulrk-record-handler
- https://nvd.nist.gov/vuln/detail/CVE-2026-111126