CVE-2026-86408 (GCVE-0-2026-86408)
Vulnerability from cvelistv5
Published
2026-09-07 12:11
Modified
2026-09-08 14:49
Severity ?
7.1 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-862 - Missing Authorization
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Summary
Affected versions of MISP do not enforce parent-event visibility when serving cryptographic keys through CryptographicKeysController::view(). The vulnerable handler queried CryptographicKey directly using the supplied key ID and selected sensitive fields such as: * type * key_data * fingerprint but did not fetch or authorize the associated parent event first. The upstream commit explicitly states that cryptographicKeys/view could return a protected event’s signing key to any authenticated user. The fix adds parent_id and parent_type to the lookup and then enforces authorization through the associated event using fetchSimpleEvent($user, parent_id). If the parent is not an Event, access is limited to site administrators. Version affected: ≤2.5.45
References
Impacted products
Vendor Product Version
MISP MISP Version: 0   ≤ 2.5.45
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