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CVE-2026-26223

6.1 · MEDIUM

SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags.

Published Feb 19, 2026CWE-79EPSS 0.40%

Overview

CVE-2026-26223 is a medium-severity vulnerability. It was published on February 19, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

SPIP before 4.4.8 allows cross-site scripting (XSS) in the private area via malicious iframe tags. The application does not properly sandbox or escape iframe content in the back-office, allowing an attacker to inject and execute malicious scripts. The fix adds a sandbox attribute to iframe tags in the private area. This vulnerability is not mitigated by the SPIP security screen.

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-4-4-8.htmlRefgit.spip.net/spip/spipRefwww.vulncheck.com/advisories/spip-cross-site-scripting-via-iframe-tags-in-private-area

How CyberStrike helps

Frequently asked questions

What is CVE-2026-26223?

CVE-2026-26223 is a medium-severity vulnerability. It was published on February 19, 2026 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-26223?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-26223?

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-2026-26223?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-26223 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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