Vulnerability · Published Aug 11, 2026 · Assigned by CIRCL
CVE-2026-73161cti-transmute Conversion Table Allows XSS via Unescaped Cell Content During Search Highlighting
Medium 5.1
In plain English
A medium-severity cross-site scripting in cti-transmute from MISP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Official description
Affected versions of cti-transmute improperly handle conversion-table values passed through the search highlighting feature. The highlight() function previously returned the underlying text directly when no search query was supplied, or performed a regex replacement that inserted <mark> tags without first escaping the original content. Because the resulting value is used by an HTML-rendering sink, malicious markup contained in conversion data could be interpreted as HTML rather than displayed as text. The fix introduces a shared highlightMatches() helper that first converts special characters such as <, >, &, and quotes into HTML entities. Only after escaping does the code insert the application-controlled <mark> element used for search highlighting.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| MISP | cti-transmute | 0 – through 1.4.0 |
Weakness: CWE-79, CWE-116 · Vector: 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