{"identifier":"CVE-2026-107350","cve":{"id":"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.","published":"2026-10-14T18:17:25.670000+00:00","modified":"2026-10-16T15:17:04.897000+00:00","status":"Awaiting Analysis","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_version":"3.1","affected":[],"weaknesses":["CWE-287"],"references":[{"url":"https://www.pgbouncer.org/changelog.html","source":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-16T03:56:50.467564Z","id":"CVE-2026-107350","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[],"source":"nvd","retrieved_at":"2026-10-28T10:22:25.746197+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00369,"percentile":0.30619,"date":"2026-10-28","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"www.pgbouncer.org","source_url":"https://www.pgbouncer.org/changelog.html","investigate_url":"https://investigate.aeglixmind.com/#www.pgbouncer.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-107350","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-107350","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-107350","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}