BIT-pgbouncer-2026-107348
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/pgbouncer/BIT-pgbouncer-2026-107348.json
- JSON Data
- https://api.osv.dev/v1/vulns/BIT-pgbouncer-2026-107348
- Aliases
-
- CVE-2026-107348
- Published
- 2026-10-21T08:55:08Z
- Modified
- 2026-10-21T12:00:37Z
- Summary
- Integer overflow causes an infinite loop in message buffer growth in PgBouncer
- Details
-
Integer overflow in the message buffer growth logic (mbuf_make_room) in PgBouncer 1.21.0 through 1.26.0 allows a remote attacker to cause a denial of service when max_packet_size is configured above 2147483648. A packet header declaring a length above 2^31 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 restarted. Since 1.23.0 the overflow is reachable before authentication with a five-byte packet header.
- Database specific
{ "cpes": [ "cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*" ], "severity": "Medium" }- References
Affected packages
Bitnami / pgbouncer
Package
- Name
- pgbouncer
- Purl
- pkg:bitnami/pgbouncer
Severity
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator