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CVE-2026-27473

6.4 · MEDIUM

SPIP before 4.4.9 allows Stored Cross-Site Scripting (XSS) via syndicated sites in the private area.

Published Feb 19, 2026CWE-79EPSS 0.38%

Overview

CVE-2026-27473 is a medium-severity vulnerability. It was published on February 19, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.htmlRefgit.spip.net/spip/spipRefwww.vulncheck.com/advisories/spip-stored-cross-site-scripting-via-syndicated-sites

How CyberStrike helps

Frequently asked questions

What is CVE-2026-27473?

CVE-2026-27473 is a medium-severity vulnerability. It was published on February 19, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2026-27473?

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-27473?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-27473?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-27473 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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