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.
References
| Link | Resource |
|---|---|
| https://www.pgbouncer.org/changelog.html |
Configurations
No configuration.
History
23 Sep 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-23 17:17
Updated : 2026-09-23 19:40
NVD link : CVE-2026-6668
Mitre link : CVE-2026-6668
CVE.ORG link : CVE-2026-6668
JSON object : View
Products Affected
No product.