CVE-2025-23210

Bypass XSS sanitizer using the javascript protocol and special characters in phpoffice/phpspreadsheet

MEDIUM

4.8

CVSS Score

Published: February 3, 2025 at 09:14 PM UTC

Updated: June 17, 2026 at 08:52 AM UTC

1 product affected across 1 vendorPhpSpreadsheet

Using PhpSpreadsheet by PHPOffice?

Get instant alerts when new vulnerabilities affect PhpSpreadsheet - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM4.8

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

phpoffice/phpspreadsheet is a pure PHP library for reading and writing spreadsheet files. Affected versions have been found to have a Bypass of the Cross-site Scripting (XSS) sanitizer using the javascript protocol and special characters. This issue has been addressed in versions 3.9.0, 2.3.7, 2.1.8, and 1.29.9. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PhpSpreadsheet · Phpofficecomposer

60%

v < 1.29.9v < 2.1.8v < 2.3.7v < 3.9.0

Affected range stops below 1.29.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.1.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.3.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.9.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISC

Source: [email protected]

https://github.com/PHPOffice/PhpSpreadsheet/commit/cde2926a9e2baf146783f8fd1771bbed7d1dc7b3

x_refsource_CONFIRM

Source: [email protected]

https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-r57h-547h-w24f

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.8MEDIUMGitHub_M

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card