CVE-2026-27474
Cross-Site Scripting in SPIP Private Area Before
Publication date: 2026-02-19
Last updated on: 2026-03-02
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 Cross-Site Scripting (XSS) issue in the private area of the software.
The problem arises because the echappe_anti_xss() function, which is intended to prevent XSS attacks, was not consistently applied to certain HTML tags such as input, form, button, and anchor (a) tags.
As a result, an attacker can inject malicious scripts through these elements, potentially compromising the security of the private area.
Additionally, this vulnerability is not mitigated by the SPIP security screen, making it easier for attackers to exploit.
How can this vulnerability impact me? :
This vulnerability can allow an attacker to execute malicious scripts in the context of the private area of SPIP.
Such Cross-Site Scripting (XSS) attacks can lead to unauthorized actions being performed on behalf of legitimate users, theft of sensitive information such as session cookies, or defacement of the website.
Because the vulnerability is not mitigated by the SPIP security screen, the risk of exploitation is higher.
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