{"id":"DEBIAN-CVE-2026-81522","details":"A weakness in the MongoDB C++ Driver's handling of caller-supplied namespace identifiers allows special characters embedded in those identifiers. An application that builds a namespace identifier from untrusted input without validating it may therefore have its operation directed at a different target than intended. This can result in limited unauthorized read and write access to data belonging to another logical tenant of the affected application.","modified":"2026-09-14T17:03:49.526554456Z","published":"2026-08-27T20:18:50.493Z","upstream":["CVE-2026-81522"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-81522"}],"affected":[{"package":{"name":"mongo-cxx-driver","ecosystem":"Debian:14","purl":"pkg:deb/debian/mongo-cxx-driver?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.5.1-1"}]}],"versions":["3.10.1-1","3.10.2-1","3.11.0-1","3.4.1-1","3.6.0-1","3.6.1-1","3.6.2-1","3.6.3-1","3.6.5-1","3.6.6-1","3.6.7-1","3.7.0-1","3.7.1-1","3.8.0-1","3.8.1-1","3.9.0-1","4.0.0-1","4.1.4-1","4.4.0-1","4.5.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-81522.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}