Vulnerability · Published Aug 11, 2026 · Assigned by CIRCL
CVE-2026-73157cti-transmute Remote MISP Event Browser Allows Cross-Site Scripting via Malicious Event Metadata
Low 2.3
In plain English
A low-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 39% of all known vulnerabilities).
Official description
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. The 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(...).
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:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N