MISP cti-transmute up to 1.4.0 Icon mapIcon icon injection

Summaryinfo

A vulnerability was found in MISP cti-transmute up to 1.4.0. It has been rated as critical. The affected element is the function mapIcon of the component Icon. The manipulation of the argument icon leads to injection. This vulnerability is documented as CVE-2026-73159. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in MISP cti-transmute up to 1.4.0 and classified as critical. This issue affects the function mapIcon of the component Icon. The manipulation of the argument icon with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Affected versions of cti-transmute allow a tag's icon value to be stored and later interpolated into HTML through Vue's v-html. The helper mapIcon() previously constructed an HTML string directly from the icon value: <i class="fas fa-${name}"></i> Because the icon is user-supplied, a crafted value could break out of the intended markup and inject attacker-controlled HTML. When the affected tag was later rendered, including on the administrative triage interface, the payload could execute in the viewer's browser. The patch mitigates the issue at multiple layers: v-html is replaced with Vue :class binding, mapIcon() now returns only a constrained FontAwesome class string, and the backend validates icons against the FontAwesome catalogue or a strict [a-z0-9-]{1,40} slug pattern before storing them.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-73159 since 08/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Applying the patch cc13416d606d91d543ce1f1e41387750f8450153 is able to eliminate this problem.

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Productinfo

Vendor

• MISP

Name

• cti-transmute

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4.0

License

• open-source

Website

• Product: https://github.com/MISP/cti-transmute/

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