phpoffice/phpspreadsheet Security Advisories for 2.3.4 (18)
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[HIGH] PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion
PKSA-r22k-87hv-mfk4 CVE-2026-59933 GHSA-xh5m-36r6-47m3
Affected version: <=1.30.5|>=2.0.0,<=2.1.17|>=2.2.0,<=2.4.6|>=3.3.0,<=3.10.6|>=4.0.0,<=5.8.0
Reported by:
GitHub -
[HIGH] PHPSpreadsheet: Gnumeric reader unbounded gzip expansion causes memory exhaustion
PKSA-m9cr-9614-rsf7 CVE-2026-59932 GHSA-2mrg-gjxq-2gvr
Affected version: <=1.30.5|>=2.0.0,<=2.1.17|>=2.2.0,<=2.4.6|>=3.3.0,<=3.10.6|>=4.0.0,<=5.8.0
Reported by:
GitHub -
[HIGH] PHPSpreadsheet: SSRF bypass via HTTP redirect in WEBSERVICE() domain whitelist
PKSA-dqzt-yst9-1w9y CVE-2026-59931 GHSA-6hq5-7373-42rg
Affected version: <=1.30.5|>=2.0.0,<=2.1.17|>=2.2.0,<=2.4.6|>=3.3.0,<=3.10.6|>=4.0.0,<=5.8.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet has CPU Denial of Service via Unbounded Row Number in XLSX Row Dimensions
PKSA-gz3f-3cz3-3wsw CVE-2026-40902 GHSA-7c6m-4442-2x6m
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet has CPU Denial of Service via Unbounded Row Index in SpreadsheetML XML Reader
PKSA-x13r-n4wc-4gcr CVE-2026-40863 GHSA-84wq-86v6-x5j6
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[CRITICAL] PhpSpreadsheet has SSRF/RCE in IOFactory::load when $filename is user controlled
PKSA-8cfg-tzhf-fr83 CVE-2026-34084 GHSA-q4q6-r8wh-5cgh
Affected version: <=1.30.2|>=2.0.0,<=2.1.14|>=2.2.0,<=2.4.3|>=3.3.0,<=3.10.3|>=4.0.0,<=5.5.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet has XSS via number format code with @ text placeholder bypasses htmlspecialchars in HTML writer
PKSA-hznc-gbby-6w16 CVE-2026-40296 GHSA-hrmw-qprp-wgmc
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet has XSS via NumberFormat @ Text Substitution in HTML Writer
PKSA-jtdk-dcr5-f11n CVE-2026-35453 GHSA-6wpp-88cp-7q68
Affected version: <=1.30.3|>=2.0.0,<=2.1.15|>=2.2.0,<=2.4.4|>=3.3.0,<=3.10.4|>=4.0.0,<=5.6.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet vulnerable to SSRF when reading and displaying a processed HTML document in the browser
PKSA-64jn-3d9t-gncx CVE-2025-54370 GHSA-rx7m-68vc-ppxh
Affected version: <1.30.0|>=2.0.0,<2.1.0|>=2.1.0,<2.1.12|>=2.2.0,<2.3.0|>=2.3.0,<2.4.0|>=3.0.0,<3.10.0|>=4.0.0,<5.0.0
Reported by:
GitHub, FriendsOfPHP/security-advisories -
[MEDIUM] PhpSpreadsheet allows bypassing of XSS sanitizer using the javascript protocol and special characters
PKSA-8b16-mcgz-h4cz CVE-2025-23210 GHSA-r57h-547h-w24f
Affected version: >=2.0.0,<2.1.8|>=2.2.0,<2.3.7|<1.29.9|>=3.0.0,<3.9.0
Reported by:
GitHub -
[MEDIUM] Cross-Site Scripting (XSS) vulnerability in generateNavigation() function in PhpSpreadsheet
PKSA-s99r-9yxm-hjvt CVE-2025-22131 GHSA-79xx-vf93-p7cx
Affected version: >=2.2.0,<2.3.6|>=2.0.0,<2.1.7|<1.29.8|>=3.0.0,<3.8.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet allows bypass XSS sanitizer using the javascript protocol and special characters
PKSA-7jd6-nb49-bz4v CVE-2024-56412 GHSA-q9jv-mm3r-j47r
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet has a Cross-Site Scripting (XSS) vulnerability of the hyperlink base in the HTML page header
PKSA-nm34-xhtz-ww9p CVE-2024-56411 GHSA-hwcp-2h35-p66w
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub -
[MEDIUM] PhpSpreadsheet has a Cross-Site Scripting (XSS) vulnerability in custom properties
PKSA-4ckb-wpj6-c29d CVE-2024-56410 GHSA-wv23-996v-q229
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet allows unauthorized Reflected XSS in Currency.php file
PKSA-ybqb-vyrq-8pdt CVE-2024-56409 GHSA-j2xg-cjcx-4677
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet allows unauthorized Reflected XSS in the Accounting.php file
PKSA-285y-y5bt-kvd9 CVE-2024-56366 GHSA-c6fv-7vh8-2rhr
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet allows unauthorized Reflected XSS in the constructor of the Downloader class
PKSA-jw5c-q9nd-tzj9 CVE-2024-56365 GHSA-jmpx-686v-c3wx
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub -
[HIGH] PhpSpreadsheet allows unauthorized Reflected XSS in `Convert-Online.php` file
PKSA-bcnb-9tc9-bjb8 CVE-2024-56408 GHSA-x88g-h956-m5xg
Affected version: >=2.2.0,<=2.3.4|>=2.0.0,<=2.1.5|<=1.29.6|>=3.0.0,<3.7.0
Reported by:
GitHub