{"id":"DEBIAN-CVE-2026-54291","details":"pgjdbc is an open source postgresql JDBC Driver. In releases 42.7.4 through 42.7.11, channelBinding=require connections can be silently downgraded from SCRAM-SHA-256-PLUS with channel binding to plain SCRAM-SHA-256 without it, losing the man-in-the-middle protection the setting is meant to guarantee. An attacker who can intercept the TLS connection can trigger the downgrade with a certificate whose signature algorithm has no tls-server-end-point channel-binding hash, because the bundled com.ongres.scram:scram-client returns an empty byte array instead of failing and pgJDBC ScramAuthenticator checks only that the server advertised a PLUS mechanism, without rejecting the empty binding or checking that the negotiated mechanism uses channel binding. This issue is fixed in version 42.7.12.","modified":"2026-09-01T16:06:50.874684261Z","published":"2026-07-06T19:17:08.407Z","upstream":["CVE-2026-54291"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-54291"}],"affected":[{"package":{"name":"libpgjava","ecosystem":"Debian:12","purl":"pkg:deb/debian/libpgjava?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["42.5.4-1","42.5.5-0+deb12u1","42.6.0-1","42.6.0-2","42.7.0-1","42.7.1-1","42.7.10-1","42.7.11-1","42.7.12-1","42.7.13-1","42.7.2-1","42.7.3-1","42.7.3-2","42.7.5-1","42.7.5-2","42.7.6-1","42.7.7-1","42.7.7-2","42.7.8-1","42.7.8-2","42.7.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54291.json"}},{"package":{"name":"libpgjava","ecosystem":"Debian:13","purl":"pkg:deb/debian/libpgjava?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["42.7.10-1","42.7.11-1","42.7.12-1","42.7.13-1","42.7.7-1","42.7.7-2","42.7.8-1","42.7.8-2","42.7.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54291.json"}},{"package":{"name":"libpgjava","ecosystem":"Debian:14","purl":"pkg:deb/debian/libpgjava?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"42.7.12-1"}]}],"versions":["42.7.10-1","42.7.11-1","42.7.7-1","42.7.7-2","42.7.8-1","42.7.8-2","42.7.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54291.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}