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phpoffice/phpspreadsheet may allow data tampering
published 3 months ago
Summary
The phpoffice/phpspreadsheet library can be tricked into processing crafted files that could alter or corrupt data. This risk affects any application that uses this library to read or write spreadsheet files. Update to version 4.5.0-p1+tuxcare as soon as possible to remove the issue.
What to do
- Update phpoffice phpoffice/phpspreadsheet to version 4.5.0-p1+tuxcare.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| TuxCare:Packagist | phpoffice | phpoffice/phpspreadsheet |
>= 4.5.0, < 4.5.0-p1+tuxcare Fix: upgrade to 4.5.0-p1+tuxcare
|
Original advisory text
TuxCare security update for phpoffice/phpspreadsheet (1 CVE)
TuxCare rebuilt phpoffice/phpspreadsheet to address 1 CVE. Fixed in 4.5.0-p1+tuxcare.
Timeline
Published4 Aug 2026
Updated15 Oct 2026
First seen15 Oct 2026
Sources
CLSA-2026-1768525047 · OSV
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