CVE-2026-27473
Received Received - Intake
Stored XSS in SPIP Private Syndicated Sites Allows Persistent Script Injection

Publication date: 2026-02-19

Last updated on: 2026-02-24

Assigner: VulnCheck

Description
SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area. The #URL_SYNDIC output is not properly sanitized on the private syndicated site page, allowing an attacker who can set a malicious syndication URL to inject persistent scripts that execute when other administrators view the syndicated site details.
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Meta Information
Published
2026-02-19
Last Modified
2026-02-24
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-15
NVD
CVE-2026-27473
EUVD
EUVD-2026-8319
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
spip spip From 4.4.0 (inc) to 4.4.9 (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 4.4.9 and is a Stored Cross-Site Scripting (XSS) issue. It occurs in the private area where syndicated sites are managed. The problem arises because the #URL_SYNDIC output is not properly sanitized on the private syndicated site page. An attacker who can set a malicious syndication URL can inject persistent scripts that execute when other administrators view the syndicated site details.

Impact Analysis

The impact of this vulnerability is that an attacker can inject malicious scripts into the syndicated site details page in the private area. These scripts execute when other administrators view the page, potentially allowing the attacker to perform actions such as stealing session tokens, performing unauthorized actions on behalf of administrators, or compromising the integrity of the administrative interface.

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