CVE-2026-27473
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| spip | spip | From 4.4.0 (inc) to 4.4.9 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know