CVE-2026-19888
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 c…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| PgBouncer | PgBouncer | through 1.25.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.