CVE-2021-35207 Cross-site scripting in n/a

What is CVE-2021-35207?

CVE-2021-35207 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue was discovered in Zimbra Collaboration Suite 8.8 before 8.8.15 Patch 23 and 9.0 before 9.0.0 Patch 16. An XSS vulnerability exists in the login component of Zimbra Web Client, in which an attacker can execute arbitrary JavaScript by adding executable JavaScript to the loginErrorCode parameter of the login url.

Weakness: CWE-79

Which versions are affected by CVE-2021-35207?

It affects 1 product.

Products include Zimbra Collaboration.

How do I fix CVE-2021-35207?

No fix has been published for CVE-2021-35207 yet. Limit exposure of the affected software until one is available.

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-2021-35207 being exploited?

There is no known exploitation of CVE-2021-35207 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2024-27443 Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting (XSS) Exploited Medium 6.1
• CVE-2023-29381 Privilege escalation in n/a Critical 9.8
• CVE-2023-29382 Code injection in n/a Critical 9.8
• CVE-2022-32294 Information disclosure in n/a Critical 9.8
• CVE-2021-35209 Server-side request forgery in n/a Critical 9.8

Sources

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

Also known as GHSA-cm82-c58j-hhv5.