What’s Vulnerable › Vulnerabilities

CVE-2021-41169: Improper Neutralization HTML tags in sulu/sulu

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-21 · updated 2026-06-17
• Weakness: CWE-79

Description

Sulu is an open-source PHP content management system based on the Symfony framework. In versions before 1.6.43 are subject to stored cross site scripting attacks. HTML input into Tag names is not properly sanitized. Only admin users are allowed to create tags. Users are advised to upgrade.

Affected products

• sulu: before 1.6.43 — fixed in 1.6.43

How to fix

Upgrade to a fixed version: sulu 1.6.43. Check the vendor advisory for mitigations.

References

• https://github.com/sulu/sulu/commit/20007ac70a3af3c9e53a6acb0ef8794b65642445
• https://github.com/sulu/sulu/security/advisories/GHSA-h58v-g3q6-q9fx
• https://github.com/sulu/sulu/commit/20007ac70a3af3c9e53a6acb0ef8794b65642445
• https://github.com/sulu/sulu/security/advisories/GHSA-h58v-g3q6-q9fx

Get alerted when CVE-2021-41169 or the next vulnerability affects your stack