{"id":"DEBIAN-CVE-2026-106435","details":"The MongoDB Python Driver's binary accelerator can read outside a buffer when an application decodes malformed BSON containing a truncated regular-expression element without a trailing NUL byte. An actor who can supply BSON to the documented decode or decode_all API can cause the application process to terminate when the C extension is loaded. The driver's normal database wire-protocol path does not reach this code.","modified":"2026-10-10T09:47:29.564551546Z","published":"2026-10-08T21:17:51.667Z","upstream":["CVE-2026-106435"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-106435"}],"affected":[{"package":{"name":"pymongo","ecosystem":"Debian:12","purl":"pkg:deb/debian/pymongo?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.11.0-1","3.11.0-1+deb12u1","4.10.1-1","4.10.1-2","4.10.1-3","4.10.1-4","4.10.1-5","4.10.1-6","4.15.3-1","4.15.3-2","4.15.4-1","4.15.4-2","4.15.5-1","4.16.0-1","4.17.0-1","4.18.1-1","4.18.2-1","4.7.3-1","4.7.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106435.json"}},{"package":{"name":"pymongo","ecosystem":"Debian:13","purl":"pkg:deb/debian/pymongo?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.10.1-6","4.15.3-1","4.15.3-2","4.15.4-1","4.15.4-2","4.15.5-1","4.16.0-1","4.17.0-1","4.18.1-1","4.18.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106435.json"}},{"package":{"name":"pymongo","ecosystem":"Debian:14","purl":"pkg:deb/debian/pymongo?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.10.1-6","4.15.3-1","4.15.3-2","4.15.4-1","4.15.4-2","4.15.5-1","4.16.0-1","4.17.0-1","4.18.1-1","4.18.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-106435.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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"}]}