What’s Vulnerable › Vulnerabilities

CVE-2020-16266

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-08-12 · updated 2026-06-17
• Weakness: CWE-79

Description

An XSS issue was discovered in MantisBT before 2.24.2. Improper escaping on view_all_bug_page.php allows a remote attacker to inject arbitrary HTML into the page by saving it into a text Custom Field, leading to possible code execution in the browser of any user subsequently viewing the issue (if CSP settings allow it).

Affected products

• mantisbt: before 2.24.2 — fixed in 2.24.2

How to fix

Upgrade to a fixed version: mantisbt 2.24.2. Check the vendor advisory for mitigations.

References

• https://mantisbt.org/blog/archives/mantisbt/665
• https://mantisbt.org/bugs/view.php?id=27056
• https://mantisbt.org/blog/archives/mantisbt/665
• https://mantisbt.org/bugs/view.php?id=27056

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