Which versions of PHP are affected by CVE-2024-56410?

Organizations using PhpSpreadsheet should be aware of moderate risk from CVE-2024-56410, a cross-site scripting vulnerability rated CVSS 4.8.. A patch is available.

Is there a public PoC exploit available for CVE-2024-56410?

Yes, a public proof-of-concept exploit is available for CVE-2024-56410. Prioritise patching immediately. EPSS: 0.7%.

How to fix or mitigate CVE-2024-56410?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Verify Content-Security-Policy and output encoding.

PHP CVE-2024-56410

Q: What is the CVSS score of CVE-2024-56410?

CVE-2024-56410 has a CVSS 4.0 base score of 4.8 (Medium). CVSS vector: 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. EPSS exploitation probability: 0.7%.

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-01-03 security-advisories@github.com

PHP XSS Phpspreadsheet

4.8

CVSS 4.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.8 MEDIUM

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:01 vuln.today

Patch released

Mar 28, 2026 - 18:01 nvd

Patch available

PoC Detected

Apr 17, 2025 - 02:35 vuln.today

Public exploit code

CVE Published

Jan 03, 2025 - 18:15 nvd

MEDIUM 4.8

DescriptionGitHub Advisory

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.

AnalysisAI

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 have a cross-site scripting (XSS) vulnerability in custom properties. The HTML page is generated without clearing custom properties. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue. Affected products include: Phpoffice Phpspreadsheet. Version information: prior to 3.7.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

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CVE-2024-56410 vulnerability details – vuln.today

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PHP CVE-2024-56410

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code