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CVE-2026-73159: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') in MISP cti-transmute

0
Medium
VulnerabilityCVE-2026-73159cvecve-2026-73159cwe-79
Published: 08/11/2026 (08/11/2026, 08:45:59 UTC)
Source: CVE Database V5
Vendor/Project: MISP
Product: cti-transmute

Description

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.

CVSS v4.0

Score 5.1medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
Passive
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
None
Subsq. Confidentiality
Low
Subsq. Integrity
Low
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Affected software

GitHub Actionsmore threats →cve
cti-transmute
pkg:github/cti-transmute
Affected versions
<=1.4.0

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Data Version
5.2
Assigner Short Name
CIRCL
Date Reserved
2026-08-11T08:45:56.986Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a7ae762bf8831d539789b38

Added to database: 08/11/2026, 09:12:02 UTC

Last updated: 08/11/2026, 09:12:02 UTC

Views: 1

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