The vulnerability of PostgreSQL PgBouncer’s connection pool software lies in the execution of an infinite loop when a condition for exiting the loop is not met. This allows a hacker to cause a service failure.
🗓️ 25 Sep 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 1 Views
| Reporter | Title | Published | Views | Family All 19 |
|---|---|---|---|---|
 | CVE-2026-6668 | 23 Sep 202621:38 | – | circl |
 | CVE-2026-6668 | 23 Sep 202616:04 | – | cve |
 | CVE-2026-6668 Integer overflow causes an infinite loop in packet buffer growth in PgBouncer | 23 Sep 202616:04 | – | cvelist |
 | CVE-2026-6668 | 23 Sep 202616:04 | – | debiancve |
 | EUVD-2026-85363 | 23 Sep 202616:04 | – | euvd |
 | Integer overflow causes an infinite loop in packet buffer growth in PgBouncer | 25 Sep 202608:01 | – | mscve |
 | CVE-2026-6668 | 23 Sep 202617:17 | – | nvd |
 | AZL-103433 CVE-2026-6668 affecting package pgbouncer 1.25.2-1 | 23 Sep 202617:17 | – | osv |
| DEBIAN-CVE-2026-6668 | 23 Sep 202617:17 | – | osv |
| ECHO-0782-8DAA-3154 | 26 Sep 202604:11 | – | osv |
10
| Source | Link |
|---|---|
| pgbouncer | www.pgbouncer.org/changelog.html |
| web | www.web.nvd.nist.gov/view/vuln/detail |
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25 Sep 2026 00:00Current
6.5Medium risk
Vulners AI Score6.5
CVSS 37.5
CVSS 27.8
EPSS0.00404