{"schema":"threatline.record/2","record":{"id":"CVE-2026-107350","aliases":[],"summary":"Authentication bypass via second StartupMessage during SCRAM authentication in PgBouncer","details":"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.","categories":["Unclassified"],"product":"PgBouncer","vendor":"n/a","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107350","source_modified_at":"2026-10-16T14:18:50.053Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"PgBouncer","vendor":"n/a","versions":[{"version":"1.17.0","lessThan":"1.26.1","versionType":"semver","status":"affected"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107350","source_modified_at":"2026-10-16T14:18:50.053Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"PgBouncer","ecosystem":null},"version":"1.26.1","basis":"first unaffected version stated in the CVE record"}],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00361,"percentile":0.2872,"score_date":"2026-10-23"},"published_at":"2026-10-14T17:34:39.009Z","modified_at":"2026-10-16T14:18:50.053Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107350","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T14:18:50.053Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107350","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.pgbouncer.org/changelog.html"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-16T03:56:50.467564Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T14:18:50.053Z","content_hash":"9172110bd1904b715e6dd7335f3f47ff18a6dc44b364fdf5515db8870a46512c"}}