MISP Unthrottled Authentication Failure Log Writes Enable Resource Exhaustion

Versions reported by the vendor

Affected version ranges reported by the assigning authority (CIRCL). Independent of NVD's CPE analysis and usually ahead of it.

• MISP MISP

  • before 2.5.46affected · semver

Other highest-scoring records for the same primary product.

• CVE-2026-90961MISP LdapAuth and LinOTPAuth Authentication Bypass via Empty or Non-String Credentials
  37Monitor
• CVE-2026-56422MISP Core: Mass Assignment and Object Re-ownership via Unvalidated Request Fields
  37Monitor
• CVE-2026-10868MISP user edit endpoint mass assignment vulnerability allows unauthorized user account modification
  36Monitor
• CVE-2026-54361MISP mass assignment vulnerabilities allow unauthorized modification of ownership and delegation records
  35Monitor
• CVE-2026-94383MISP Blocklist Workflow Module: Arbitrary Script Execution via Unrestricted File Extension
  34Monitor
• CVE-2026-94381MISP Privilege Escalation: Read-Only API Key User Can Regain Full Role via updateLoginTime
  34Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.