MISP contains a DOM-based cross-site scripting (XSS) vulnerability in the contextual menu JavaScript component. The ContextualMenu class populates HTML <option> elements by assigning user-controllable values to the innerHTML property. Because innerHTML parses and renders HTML markup, any untrusted string supplied as the option text (value.text or value) is interpreted as live DOM content rather than plain text. An attacker who can influence the data rendered in the contextual menu can inject arbitrary HTML or JavaScript that executes in the victim's browser within the MISP application origin. This may allow session hijacking, data exfiltration, or unauthorized actions performed on behalf of the authenticated user.
Version affected: <2.5.47
Metrics
Affected Vendors & Products
References
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| https://github.com/MISP/MISP/commit/b062698f2 |
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History
Mon, 21 Sep 2026 16:30:00 +0000
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ssvc
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Mon, 21 Sep 2026 13:45:00 +0000
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Misp
Misp misp |
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Misp
Misp misp |
Mon, 21 Sep 2026 12:30:00 +0000
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| Description | MISP contains a DOM-based cross-site scripting (XSS) vulnerability in the contextual menu JavaScript component. The ContextualMenu class populates HTML <option> elements by assigning user-controllable values to the innerHTML property. Because innerHTML parses and renders HTML markup, any untrusted string supplied as the option text (value.text or value) is interpreted as live DOM content rather than plain text. An attacker who can influence the data rendered in the contextual menu can inject arbitrary HTML or JavaScript that executes in the victim's browser within the MISP application origin. This may allow session hijacking, data exfiltration, or unauthorized actions performed on behalf of the authenticated user. Version affected: <2.5.47 | |
| Title | MISP DOM-based Cross-Site Scripting via innerHTML in Contextual Menu | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: CIRCL
Published: 2026-09-21T12:16:47.877Z
Updated: 2026-09-21T15:22:31.730Z
Reserved: 2026-09-21T12:16:44.364Z
Link: CVE-2026-94373
Updated: 2026-09-21T15:22:26.119Z
Status : Deferred
Published: 2026-09-21T13:17:12.757
Modified: 2026-09-21T16:17:30.017
Link: CVE-2026-94373
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