7.5
High
CVE-2026-19888 Missing validation of a mandatory attribute in the SCRAM client-final-message parser in PgBouncer through 1.25.2…
Description
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 and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| pgbouncer 1.25 | earliest → 1.25.2 | No fix stated |
References
- www.pgbouncer.org www.pgbouncer.org
Timeline
- Published
- Last modified
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