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I. Basic Information for CVE-2026-33548
Vulnerability Information

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Vulnerability Title
MantisBT has Stored HTML Injection / XSS when displaying Tags in Timeline
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, improper escaping of tag names retrieved from History in Timeline (my_view_page.php) allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript, when displaying a tag that has been renamed or deleted. Version 2.28.1 contains a patch. Workarounds include editing offending History entries (using SQL) and wrapping `$this->tag_name` in a string_html_specialchars() call in IssueTagTimelineEvent::html().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Mantis Bug Tracker 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mantis Bug Tracker(MantisBT)是Mantis Bug Tracker开源的一个 bug 跟踪器。 Mantis Bug Tracker 2.28.0版本存在跨站脚本漏洞,该漏洞源于时间线中标签名称转义不当,可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
mantisbtmantisbt = 2.28.0 -
II. Public POCs for CVE-2026-33548
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III. Intelligence Information for CVE-2026-33548
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IV. Related Vulnerabilities
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