{"id":"DEBIAN-CVE-2026-88035","details":"A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.","modified":"2026-09-17T09:00:12.481906303Z","published":"2026-09-10T19:17:40.953Z","upstream":["CVE-2026-88035"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-88035"}],"affected":[{"package":{"name":"mongo-c-driver","ecosystem":"Debian:12","purl":"pkg:deb/debian/mongo-c-driver?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.23.1-1","1.23.1-1+deb12u1","1.23.1-1+deb12u2","1.23.1-1+deb12u3","1.24.1-1","1.24.2-1","1.24.3-1","1.24.4-1","1.25.0-1","1.25.1-1","1.25.2-1","1.25.4-1","1.25.4-1.1~exp1","1.26.0-1","1.26.0-1.1","1.26.0-1.1~exp1","1.26.1-1","1.26.2-1","1.27.0-1","1.27.1-1","1.27.2-1","1.27.3-1","1.27.4-1","1.27.5-1","1.27.6-1","1.28.0-1","1.28.1-1","1.29.0-1","1.29.1-1","1.29.2-1","1.30.0-1","1.30.1-1","1.30.2-1","1.30.3-1","1.30.4-1","2.0.2-1","2.1.0-1","2.1.1-1","2.1.2-1","2.2.0-1","2.2.1-1","2.2.2-1","2.2.3-1","2.2.4-1","2.3.0-1","2.3.1-1","2.3.2-1","2.3.3-1","2.4.0-1","2.5.0-1","2.5.1-1","2.5.2-1","2.5.3-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88035.json"}},{"package":{"name":"mongo-c-driver","ecosystem":"Debian:13","purl":"pkg:deb/debian/mongo-c-driver?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.30.4-1","1.30.4-1+deb13u1","1.30.4-1+deb13u2","1.30.4-1+deb13u3","2.0.2-1","2.1.0-1","2.1.1-1","2.1.2-1","2.2.0-1","2.2.1-1","2.2.2-1","2.2.3-1","2.2.4-1","2.3.0-1","2.3.1-1","2.3.2-1","2.3.3-1","2.4.0-1","2.5.0-1","2.5.1-1","2.5.2-1","2.5.3-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88035.json"}},{"package":{"name":"mongo-c-driver","ecosystem":"Debian:14","purl":"pkg:deb/debian/mongo-c-driver?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.3-1"}]}],"versions":["1.30.4-1","2.0.2-1","2.1.0-1","2.1.1-1","2.1.2-1","2.2.0-1","2.2.1-1","2.2.2-1","2.2.3-1","2.2.4-1","2.3.0-1","2.3.1-1","2.3.2-1","2.3.3-1","2.4.0-1","2.5.0-1","2.5.1-1","2.5.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-88035.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}