CVE-2026-6668
Integer overflow causes an infinite loop in packet buffer growth in PgBouncer
HIGH 7.5
En bref
- Source
- NVD
- EPSS
- EPSS 0.57 % · centile 47 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- PostgreSQL
- Statut NVD
- Awaiting Analysis
Description
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.
Faiblesses (CWE)
- CWE-190 — Débordement d'entier
- CWE-835 — Boucle dont la condition de sortie est inatteignable (boucle infinie)
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | PostgreSQL |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Secondary) |
Références européennes
- ENISA EUVD · EUVD-2026-85363
- GCVE · GCVE-0-2026-6668
Produits affectés
| Produit | Versions |
|---|---|
| PgBouncer | affected 0 ≤ 1.25.2 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |