CVE-2026-26223
Received Received - Intake
Stored Cross-Site Scripting in SPIP Private Area via Iframes

Publication date: 2026-02-19

Last updated on: 2026-03-02

Assigner: VulnCheck

Description
SPIP before 4.4.8 allows Cross-Site Scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.
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Meta Information
Published
2026-02-19
Last Modified
2026-03-02
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-15
NVD
CVE-2026-26223
EUVD
EUVD-2026-7582
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
spip spip From 4.4.0 (inc) to 4.4.8 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability affects SPIP versions before 4.4.8 and allows Cross-Site Scripting (XSS) attacks in the private area of the application. It occurs because the application does not properly sandbox or escape iframe content in the back-office, which enables an attacker to inject and execute malicious scripts via malicious iframe tags.

The issue is addressed by adding a sandbox attribute to iframe tags in the private area to prevent such script execution.

Impact Analysis

An attacker exploiting this vulnerability can inject and execute malicious scripts within the private area of the SPIP application. This can lead to unauthorized actions such as stealing sensitive information, hijacking user sessions, or performing actions on behalf of legitimate users.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade SPIP to version 4.4.8 or later, where the issue is fixed by adding a sandbox attribute to iframe tags in the private area.

Since the vulnerability is not mitigated by the SPIP security screen, relying on that is insufficient.

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