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CVE-2024-56366

18
FAUCET Score

CVE-2024-56366 describes a reflected cross-site scripting (XSS) vulnerability in PhpSpreadsheet versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7, specifically within the Accounting.php file. This medium-severity vulnerability (CVSS 5.4) allows an attacker to execute arbitrary scripts in a user's browser through a crafted URL, requiring user interaction and authenticated access to the affected application. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.29.7CPE matchmatch criteria
cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*
>= 2.0.0, < 2.1.6CPE matchmatch criteria
cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*
>= 2.2.0, < 2.3.5CPE matchmatch criteria
cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.7.0CPE matchmatch criteria
cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.3HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
ACTIVE
VS Confidentiality
NONE
VS Integrity
HIGH
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
HIGH
SS Availability
LOW
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
24.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 36th percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

composerpatch availablevia ghsa
Product: phpoffice/phpspreadsheetFixed in: 3.7.0
composerpatch availablevia ghsa
Product: phpoffice/phpspreadsheetFixed in: 1.29.7
composerpatch availablevia ghsa
Product: phpoffice/phpspreadsheetFixed in: 2.1.6
composerpatch availablevia ghsa
Product: phpoffice/phpspreadsheetFixed in: 2.3.5
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-c6fv-7vh8-2rhrhigh

PhpSpreadsheet allows unauthorized Reflected XSS in the Accounting.php file

Jan 3, 2025

References

github.com / PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4
Patch
github.com / PHPOffice/PhpSpreadsheet/security/advisories/GHSA-c6fv-7vh8-2rhr
ExploitVendor Advisory