{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73159","assignerOrgId":"5a6e4751-2f3f-4070-9419-94fb35b644e8","state":"PUBLISHED","assignerShortName":"CIRCL","dateReserved":"2026-08-11T08:45:56.986Z","datePublished":"2026-08-11T08:45:59.398Z","dateUpdated":"2026-08-11T13:03:25.189Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"cti-transmute","repo":"https://github.com/MISP/cti-transmute","vendor":"MISP","versions":[{"lessThanOrEqual":"1.4.0","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Jeroen Pinoy"},{"lang":"en","type":"remediation developer","value":"Christian Studer"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Affected versions of cti-transmute allow a tag's <code>icon</code> value to be stored and later interpolated into HTML through Vue's <code>v-html</code>. The helper <code>mapIcon()</code> previously constructed an HTML string directly from the icon value:</p>\n<p><code>&lt;i class=\"fas fa-${name}\"&gt;&lt;/i&gt;</code></p>\n<p>Because the icon is user-supplied, a crafted value could break out of the intended markup and inject attacker-controlled HTML. When the affected tag was later rendered, including on the administrative triage interface, the payload could execute in the viewer's browser.</p>\n<p>The patch mitigates the issue at multiple layers: <code>v-html</code> is replaced with Vue <code>:class</code> binding, <code>mapIcon()</code> now returns only a constrained FontAwesome class string, and the backend validates icons against the FontAwesome catalogue or a strict <code>[a-z0-9-]{1,40}</code> slug pattern before storing them.</p>"}],"value":"Affected versions of cti-transmute allow a tag's icon value to be stored and later interpolated into HTML through Vue's v-html. The helper mapIcon() previously constructed an HTML string directly from the icon value:\n\n\n<i class=\"fas fa-${name}\"></i>\n\n\nBecause 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.\n\n\nThe 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."}],"impacts":[{"capecId":"CAPEC-63","descriptions":[{"lang":"en","value":"CAPEC-63 Cross-Site Scripting (XSS)"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"5a6e4751-2f3f-4070-9419-94fb35b644e8","shortName":"CIRCL","dateUpdated":"2026-08-11T08:45:59.398Z"},"references":[{"tags":["patch"],"url":"https://github.com/MISP/cti-transmute/commit/cc13416d606d91d543ce1f1e41387750f8450153"}],"source":{"discovery":"UNKNOWN"},"title":"cti-transmute Stored XSS via Crafted Tag Icon on Admin Triage Interface","x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T13:02:58.398751Z","id":"CVE-2026-73159","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-11T13:03:25.189Z"}}]}}