What’s Vulnerable › Vulnerabilities

CVE-2026-41897: MantisBT: Reflected XSS in Rendering Dynamic Custom Textarea Field

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-06-17
• Weakness: CWE-79

Description

Mantis Bug Tracker (MantisBT) is an open source issue tracker. From 1.0.0 to 2.28.1, lack of validation of filter_target parameter on return_dynamic_filters.php (normally used as an AJAX in View Issues Page) allows an attacker to inject arbitrary HTML if the target is a TEXTAREA custom field. This vulnerability is fixed in 2.28.2.

Affected products

• mantisbt: from 1.0.0, < 2.28.2

References

• https://github.com/mantisbt/mantisbt/commit/c885af13f0b8596714ffe11df757c09f35fbd8f4
• https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j7v9-f46r-2rp4
• https://mantisbt.org/bugs/view.php?id=37013

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