CVE-2021-33557

MEDIUM

Published Jun 17, 20215y ago · Modified Jun 17, 20262w ago

6.1 CVSS 3.1

Medium

Published Jun 17, 2021 5y ago

Last Modified Jun 17, 2026 2w ago

Description

An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.

CVSS Details

Base Score

6.1

Exploitability

2.8

Impact

2.7

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Changed

Confidentiality Low

Integrity Low

Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

Public Exploit Known

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

Vendor	Product	Version	Range
mantisbt	mantisbt	*	<2.25.2

References 2

mantisbt.org https://mantisbt.org/blog/archives/mantisbt/699

Release NotesVendor Advisory
mantisbt.org https://mantisbt.org/bugs/view.php?id=28552

ExploitVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.