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CVE Vulnerability Details :
CVE-2026-40596
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-22 May, 2026 | 19:25
Updated At-22 May, 2026 | 20:10
Rejected At-
▼CVE Numbering Authority (CNA)
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 (CSP bypass, see GHSA-9c3j-xm6v-j7j3), the attacker could achieve account takeover. This issue has been fixed in version 2.28.2.

Affected Products
Vendor
Mantis Bug Tracker (MantisBT)mantisbt
Product
mantisbt
Versions
Affected
  • >= 2.11.0, < 2.28.2
Problem Types
TypeCWE IDDescription
CWECWE-79CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.07.2HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:L
Version: 4.0
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j
x_refsource_CONFIRM
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3
x_refsource_MISC
https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d
x_refsource_MISC
https://mantisbt.org/bugs/view.php?id=37011
x_refsource_MISC
https://mantisbt.org/bugs/view.php?id=37016
x_refsource_MISC
Hyperlink: https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3
Resource:
x_refsource_MISC
Hyperlink: https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d
Resource:
x_refsource_MISC
Hyperlink: https://mantisbt.org/bugs/view.php?id=37011
Resource:
x_refsource_MISC
Hyperlink: https://mantisbt.org/bugs/view.php?id=37016
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found