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CVE Watch23 sept 2026

CVE-2026-6668

Integer overflow in the packet buffer growth logic in PgBouncer through 1.25.2 allows an unauthenticated remote attacker to cause a denial o

CVSS

7.5

Alto

EPSS

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KEV

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Exploit Today

0

0-100

Publicado: 23 sept 2026 · Última mod.: 23 sept 2026 · CWE-190 · CWE-835

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

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.

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