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CVE-2026-40863 · cross-distro fix matrix
CVE-2026-40863: PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0, the SpreadsheetML XML reader (Reader\Xml) does not validate the ss:In
Affects 0 Linux releases across 0 (distro × package) combinations. First disclosed: 2026-05-12.
CVSS v3:HIGH · 7.5(NVD-published)
Fix per ecosystem
Each block below is a distro release where CVE-2026-40863 has a known fix. Run the listed command on that distro to remediate.
Are YOU affected by CVE-2026-40863?
5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.
curl https://mindsparkstack.com/scan.sh | bash
Continuous monitoring beats manual checking
CVE-2026-40863dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.
See StackPatch ($99 lifetime)