CVE-2021-32737 XSS Injection in Media Collection Title was possible

What is CVE-2021-32737?

CVE-2021-32737 is a high-severity cross-site scripting vulnerability in sulu, published on 2 Jul 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Sulu is an open-source PHP content management system based on the Symfony framework. In versions of Sulu prior to 1.6.41, it is possible for a logged in admin user to add a script injection (cross-site-scripting) in the collection title. The problem is patched in version 1.6.41. As a workaround, one may manually patch the affected JavaScript files in lieu of updating.

Weakness: CWE-79

Which versions are affected by CVE-2021-32737?

2 open source packages ship an affected version, including sulu/sulu. It affects 1 product.

Products include Sulu Sulu.

How do I fix CVE-2021-32737?

Upgrade sulu/sulu to 1.6.41 or later.

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-2021-32737 being exploited?

There is no known exploitation of CVE-2021-32737 in the wild and no public exploit code.

Other vulnerabilities in sulu

• CVE-2021-43836 PHP file inclusion in the Sulu admin panel High 8.5
• CVE-2021-43835 Privilege escalation in the Sulu Admin panel High 7.2
• CVE-2024-27915 Sulu grants access to pages regardless of role permissions Medium 6.8
• CVE-2021-41169 Improper Neutralization HTML tags in sulu/sulu Medium 6.2
• CVE-2024-47617 Reflected XSS Vulnerability in Sulu Media Bundle Medium 6.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gm2x-6475-g9r8.