CVE-2021-27401 Cross-site scripting in n/a

What is CVE-2021-27401?

CVE-2021-27401 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 Aug 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

The Join Meeting page of Mitel MiCollab Web Client before 9.2 FP2 could allow an attacker to access (view and modify) user data by executing arbitrary code due to insufficient input validation, aka Cross-Site Scripting (XSS).

Weakness: CWE-79

Which versions are affected by CVE-2021-27401?

It affects 1 product.

Products include Mitel Micollab.

How do I fix CVE-2021-27401?

No fix has been published for CVE-2021-27401 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-2021-27401 being exploited?

There is no known exploitation of CVE-2021-27401 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2022-26143 MiCollab, MiVoice Business Express Access Control Exploited Critical 9.8
• CVE-2024-41713 Mitel MiCollab Path Traversal Exploited Critical 9.1
• CVE-2024-55550 Mitel MiCollab Path Traversal Exploited Medium 4.4
• CVE-2024-35285 Command injection in n/a Critical 9.8
• CVE-2024-35286 SQL injection in n/a Critical 9.8

Sources

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

Also known as GHSA-2r9r-8hr4-8x64.