CVE-2026-72760 PUBLISHED

cti-transmute Following List Exposes User Email Addresses to Authenticated Users

Assigner: CIRCL
Reserved: 10.08.2026 Published: 10.08.2026 Updated: 10.08.2026

Affected versions of MISP cti-transmute disclose users' email addresses through the account following-list endpoint. When an authenticated user follows another account, get_following() includes the followed user's email field in the API response alongside their name, user ID, and follow date. Because the email address is not required for the functionality and other related user lists omit it, an authenticated attacker could systematically follow users and collect their email addresses. The fix removes user.email from the returned object.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
CVSS Score: 5.3

Product Status

Vendor MISP
Product cti-transmute
Versions Default: unaffected
  • affected from 0 to 1.4.0 (incl.)

Credits

  • Jeroen Pinoy finder
  • Christian Studer remediation developer

References

Problem Types

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor CWE

Impacts

  • CAPEC-169 Footprinting