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Fencer Vulns
medium 5.4

CVE-2025-23210 json

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

published 2025-02-03 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-0222 , GHSA-r57h-547h-w24f

cvss
5.4
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist phpoffice/phpspreadsheet 1.29.9, 2.1.8, 2.3.7, 3.9.0
  • phpoffice phpspreadsheet 1.29.9, 2.1.8, 2.3.7, 3.9.0
  • phpspreadsheet_project phpspreadsheet 1.29.9, 2.1.8, 2.3.7, 3.9.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 4.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA 4.0 4.8 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/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

Affected packages

ecosystem package affected fixed in
packagist phpoffice/phpspreadsheet
>=3.0.0, <3.9.0
<1.29.9
>=2.2.0, <2.3.7
>=2.0.0, <2.1.8
3.9.0
1.29.9
2.3.7
2.1.8
packagist phpoffice/phpexcel
<=1.8.2
no fix listed

Affected products

  • PHPOffice PhpSpreadsheet

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.