CVE catalog
CVE-2026-107350
pgbouncer: CVE-2026-107350
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.37% · Oct 25, 2026
Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the password of a user listed in auth_file to log in as any other user that authenticates using SCRAM, including PgBouncer admin users and backend superusers. A second StartupMessage sent during SCRAM authentication against a non-existent database is not rejected and switches the user being logged in as, while the SCRAM exchange is still verified against the keys of the first user.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pgbouncer | sid | 1.26.1-1 | fixed |
| Debian | pgbouncer | forky | 1.26.1-1 | fixed |
| Debian | pgbouncer | trixie | 1.24.1-1+deb13u2 | vulnerable |
| Debian | pgbouncer | bookworm | 1.18.0-1+deb12u1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pgbouncer | source | sid | 1.26.1-1 | not yet assigned | Not reported | Not reported |
| Debian | pgbouncer | source | forky | 1.26.1-1 | not yet assigned | Not reported | Not reported |
| Debian | pgbouncer | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | pgbouncer | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [pgbouncer]Affected
Details (2)
1.18.0-1+deb12u1· amd64 · bookwormAffected
dsa · pgbouncer · debian · bookworm; dsa · pgbouncer · debian · 12
1.18.0-1+deb12u1· arm64 · bookwormAffected
dsa · pgbouncer · debian · bookworm; dsa · pgbouncer · debian · 12
[Debian 13 (Trixie)]
- [pgbouncer]Affected
Details (2)
1.24.1-1+deb13u2· amd64 · trixieAffected
dsa · pgbouncer · debian · 13
1.24.1-1+deb13u2· arm64 · trixieAffected
dsa · pgbouncer · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-107350]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-107350]
- [https://security-tracker.debian.org/tracker/CVE-2026-107350]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107350.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3906.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]