{"id":"CVE-2026-73157","summary":"cti-transmute Remote MISP Event Browser Allows Cross-Site Scripting via Malicious Event Metadata","details":"Affected versions of cti-transmute render data obtained from a remote MISP instance into the event-browser interface using HTML interpolation. Because fields such as event IDs, event information, organization names, tags, tag colors, TLP labels, distribution labels, and error/flash text may be controlled by the remote MISP server, a malicious or compromised remote instance could return crafted values that inject HTML or script-capable content into the cti-transmute interface.\n\n\nThe patch explicitly notes that remote-derived values must not reach innerHTML, and replaces string-built rows and badges with DOM nodes populated through textContent. It also restricts remote-controlled tag colors to six-digit hexadecimal values, preventing malicious CSS values such as url(...).","modified":"2026-08-28T11:30:30.022356480Z","published":"2026-08-11T08:06:57.569Z","database_specific":{"cna_assigner":"CIRCL","cwe_ids":["CWE-116","CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73157.json","unresolved_ranges":[{"extracted_events":[{"last_affected":"1.4.0"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73157.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73157"},{"type":"FIX","url":"https://github.com/MISP/cti-transmute/commit/95e64137358d6fb7f1711523de2bf02ff6b181a7"},{"type":"PACKAGE","url":"https://github.com/MISP/cti-transmute"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/misp/cti-transmute","events":[{"introduced":"0"},{"fixed":"95e64137358d6fb7f1711523de2bf02ff6b181a7"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.4","v1.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73157.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N"}]}