EUVD-2026-31495

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.11.0 through 2.28.1, a Stored XSS vulnerability is caused by incorrect escaping of a saved filter's owner, allowing an attacker to inject arbitrary HTML on systems where $gshowuserrealname = ON. Note that By default, only...

CVE-2026-40607 MantisBT is Vulnerable to Stored XSS Through its Saved-Filter Owner Column

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.11.0 through 2.28.1, a Stored XSS vulnerability is caused by incorrect escaping of a saved filter's owner, allowing an attacker to inject arbitrary HTML on systems where $gshowuserrealname = ON. Note that By default, only...

CVE-2026-40598

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page retrieved from the request's Referer header allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode...

EUVD-2026-31494

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page retrieved from the request's Referer header allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode...

CVE-2026-40598 MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page retrieved from the request's Referer header allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode...

CVE-2026-40598 MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page retrieved from the request's Referer header allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode...

CVE-2026-40597 MantisBT has a Content Security Policy bypass via attachments

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via th...

CVE-2026-40597

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via th...

EUVD-2026-31496

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via th...

CVE-2026-40597 MantisBT has a Content Security Policy bypass via attachments

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via th...

CVE-2026-40597 MantisBT has a Content Security Policy bypass via attachments

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via th...

CVE-2026-40596

Summary (CVE-2026-40596): MantisBT versions 2.11.0–2.28.1 are vulnerable to cross-site scripting via an authenticated user updating their font-family preference. The XSS payload is reflected on every page; with a CSP bypass (GHSA-9c3j-xm6v-j7j3) this could enable account takeover. The issue is fi...

CVE-2026-40596

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

EUVD-2026-31492

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

CVE-2026-40596 MantisBT is vulnerable to XSS and potential account takeover via user font family preference update

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

CVE-2026-40596 MantisBT is vulnerable to XSS and potential account takeover via user font family preference update

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

CVE-2026-40596 MantisBT is vulnerable to XSS and potential account takeover via user font family preference update

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

CVE-2026-40596: Improper Neutralization of Input During Web Page Generation

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

CVE-2026-40597: Improper Neutralization of Input During Web Page Generation

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via th...

Mantis Bug Tracker Security Feature Vulnerabilities

Mantis Bug Tracker MantisBT is an open-source bug tracker developed by Mantis Bug Tracker. Versions of Mantis Bug Tracker prior to 2.28.1 contained a security vulnerability related to the script-src directive, which allowed bypassing content security policies by uploading specially crafted...