CVE-2020-25288 MantisBT XXS where a Custom Field with a crafted Regular Expression property is used
Attackers can inject HTML and execute arbitrary JavaScript via crafted custom field regex patterns in MantisBT, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-25288?
CVE-2020-25288 is a medium-severity cross-site scripting vulnerability in Mantisbt Mantisbt, published on 30 Sep 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
An issue was discovered in MantisBT before 2.24.3. When editing an Issue in a Project where a Custom Field with a crafted Regular Expression property is used, improper escaping of the corresponding form input's pattern attribute allows HTML injection and, if CSP settings permit, execution of arbitrary JavaScript.
Weakness: CWE-79
Which versions are affected by CVE-2020-25288?
2 open source packages ship an affected version, including mantisbt/mantisbt. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mantisbt/mantisbt Packagist | From 2.23.0 | 2.24.3 |
mantisbt/mantisbt Packagist | From 2.23.0 | 2.24.3 |
Products include Mantisbt Mantisbt.
How do I fix CVE-2020-25288?
Upgrade mantisbt/mantisbt to 2.24.3 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-2020-25288 being exploited?
There is no known exploitation of CVE-2020-25288 in the wild and no public exploit code.
Other vulnerabilities in Mantisbt Mantisbt
- CVE-2019-15074 MantisBT allows cross-site scripting (XSS) via crafted filename
- CVE-2026-30849 MantisBT SOAP API has an authentication bypass vulnerability on MySQL
- CVE-2025-47776 MantisBT: Authentication bypass for some passwords due to PHP type juggling
- CVE-2017-7615 MantisBT allows arbitrary password reset
- CVE-2026-33517 MantisBT Vulnerable to Stored HTML Injection in Tag Delete Confirmation
Sources
Also known as GHSA-qgrr-f26j-87vf.