{"id":"CVE-2026-107349","title":"An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service","summary":"An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as \"-c=\", makes the ignore_startu…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400","CWE-835"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T18:17:25.557","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107349","references":[{"url":"https://www.pgbouncer.org/changelog.html","label":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}],"tags":["nvd"],"ingestedAt":"2026-10-14T18:47:39.309Z","slug":"CVE-2026-107349","body":"## Overview\n\nAn infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as \"-c=\", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}