CVE-2026-108359 PhpSpreadsheet - Denial of Service

PhpSpreadsheet < 1.30.7, 2.1.19, 2.4.8, 3.10.8, and 5.10.0 contains a denial of service caused by unbounded table:number-rows-repeated attribute processing in Ods::processTableRow, letting attackers cause high CPU and memory usage, exploit requires crafted ODS file.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-400

Vendor fix

Update to versions 1.30.7, 2.1.19, 2.4.8, 3.10.8, or 5.10.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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