CVE-2020-13321: Input Validation
First published: Tue Sep 29 2020(Updated: )
A vulnerability was discovered in GitLab versions prior to 13.1. Username format restrictions could be bypassed allowing for html tags to be added.
Credit: cve@gitlab.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GitLab | <12.10.13 | |
| GitLab | >=13.0.0<13.0.8 | |
| GitLab | >=13.1.0<13.1.2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-13321?
CVE-2020-13321 has a medium severity, primarily due to the potential for cross-site scripting attacks through user-inputted HTML tags.
How do I fix CVE-2020-13321?
To fix CVE-2020-13321, upgrade your GitLab instance to version 13.1 or later.
What versions are affected by CVE-2020-13321?
CVE-2020-13321 affects GitLab versions prior to 13.1, specifically versions 12.10.13, 13.0.8 to 13.0.0, and 13.1.2 to 13.1.0.
What kind of attack can exploit CVE-2020-13321?
CVE-2020-13321 can be exploited to perform cross-site scripting (XSS) attacks through the addition of HTML tags in usernames.
Is CVE-2020-13321 specific to any GitLab installation?
Yes, CVE-2020-13321 specifically affects self-managed GitLab installations and may not apply to GitLab.com.
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- version/gitlab/13.0.0
- version/gitlab/13.1.0