{"id":"BIT-pgbouncer-2026-19888","summary":"NULL pointer dereference in SCRAM client-final-message parsing in PgBouncer","details":"Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to crash the process. A malformed message can make the parser report success while leaving a required value unset, which is then dereferenced as a NULL pointer. The crash occurs before any credential is verified, so no valid account is required. Because PgBouncer serves all clients from a single process, this terminates every pooled connection.","aliases":["CVE-2026-19888"],"modified":"2026-10-01T10:00:07.831583163Z","published":"2026-10-01T09:30:57.797Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19888"},{"type":"WEB","url":"https://www.pgbouncer.org/changelog.html"}],"affected":[{"package":{"name":"pgbouncer","ecosystem":"Bitnami","purl":"pkg:bitnami/pgbouncer"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.26.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/pgbouncer/BIT-pgbouncer-2026-19888.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}