What is GHSA-qcxp-3cx5-3f3g?

GHSA-qcxp-3cx5-3f3g is a security advisory published by GitHub Security Advisories with High severity. Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the...

Which CVE IDs does GHSA-qcxp-3cx5-3f3g cover?

GHSA-qcxp-3cx5-3f3g covers the following CVE IDs: CVE-2026-107350. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-qcxp-3cx5-3f3g?

GHSA-qcxp-3cx5-3f3g has a CVSS v3 base score of 8.8, published by GitHub Security Advisories.

GHSA-qcxp-3cx5-3f3gHighCVSS 8.8

Improper authentication in PgBouncer 1.17.0 through 1.26.0 allows a remote attacker who knows the...

Vendor

GitHub Security Advisories

Published

October 14, 2026

Last Modified

October 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-107350 →

📋 Description

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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-107350
https://www.pgbouncer.org/changelog.html
https://github.com/advisories/GHSA-qcxp-3cx5-3f3g