CVE-2026-27474 SPIP < 4.4.9 Cross-Site Scripting in Private Area (Incomplete Fix)
Attackers can inject malicious scripts into SPIP private area elements due to incomplete XSS filtering, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-27474?
CVE-2026-27474 is a medium-severity cross-site scripting vulnerability in Spip Spip, published on 19 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
SPIP before 4.4.9 allows Cross-Site Scripting (XSS) in the private area, complementing an incomplete fix from SPIP 4.4.8. The echappe_anti_xss() function was not systematically applied to input, form, button, and anchor (a) HTML tags, allowing an attacker to inject malicious scripts through these elements. This vulnerability is not mitigated by the SPIP security screen.
Weakness: CWE-79
Which versions are affected by CVE-2026-27474?
It affects 1 product.
Products include Spip Spip.
How do I fix CVE-2026-27474?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-27474 being exploited?
There is no known exploitation of CVE-2026-27474 in the wild and no public exploit code.
Other vulnerabilities in Spip Spip
Sources
Also known as DEBIAN-CVE-2026-27474, GHSA-c33v-v6jp-566m, UBUNTU-CVE-2026-27474.