{"id":"CVE-2026-6668","published":"2026-09-23T17:17:16.073","lastModified":"2026-09-23T19:40:10.000","description":"Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to cause a denial of service. Sufficiently large input makes the buffer size computation overflow, leaving the growth loop unable to terminate. Because PgBouncer serves all clients from a single process, this saturates a CPU core and stalls every pooled connection until the process is killed. Both unauthenticated and authenticated code paths can reach the overflow.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-190","CWE-835"],"vendors":[],"products":[],"references":[{"url":"https://www.pgbouncer.org/changelog.html","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}