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PhpSpreadsheet has XSS via NumberFormat @ Text Substitution in HTML Writer

🗓️ 28 Apr 2026 22:50:31Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

PhpSpreadsheet HTML writer does not escape when a cell uses @ with literal text, enabling XSS.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-35453
5 May 202619:39
attackerkb
Circl
CVE-2026-35453
5 May 202621:34
circl
CNNVD
PhpSpreadsheet 跨站脚本漏洞
5 May 202600:00
cnnvd
CVE
CVE-2026-35453
5 May 202619:39
cve
Cvelist
CVE-2026-35453 PhpSpreadsheet XSS via number format text substitution in HTML Writer
5 May 202619:39
cvelist
EUVD
EUVD-2026-27472
5 May 202619:39
euvd
NVD
CVE-2026-35453
5 May 202620:16
nvd
OSV
GHSA-6WPP-88CP-7Q68 PhpSpreadsheet has XSS via NumberFormat @ Text Substitution in HTML Writer
28 Apr 202622:50
osv
Positive Technologies
PT-2026-35931
28 Apr 202600:00
ptsecurity
RedhatCVE
CVE-2026-35453
6 May 202620:22
redhatcve
Rows per page
Vulners
Node
phpofficephpspreadsheetRange1.30.3composer
OR
phpofficephpspreadsheetRange2.0.02.1.15composer
OR
phpofficephpspreadsheetRange2.2.02.4.4composer
OR
phpofficephpspreadsheetRange3.3.03.10.4composer
OR
phpofficephpspreadsheetRange4.0.05.6.0composer

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08 May 2026 15:29Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.15.4
CVSS 44.8
EPSS0.0001
SSVC
4