Medium severity · published May 28, 2026
CVE-2026-41897
MantisBT: Reflected XSS in Rendering Dynamic Custom Textarea Field
5.3
CVSS
0.3%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
mantisbt · mantisbt
>= 1.0.0, < 2.28.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41897
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41897
github.com
https://github.com/mantisbt/mantisbt/commit/c885af13f0b8596714ffe11df757c09f35fbd8f4
github.com
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j7v9-f46r-2rp4
mantisbt.org
https://mantisbt.org/bugs/view.php?id=37013
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