{"id":"DEBIAN-CVE-2026-96749","details":"An integer overflow in the BSON document encoding component of the MongoDB Python Driver's bundled native extension may occur when a single document is built from an unusually large amount of caller-supplied data. Size arithmetic is performed in a signed 32-bit type, and the guard meant to catch the overflow is written in a form whose behavior is not defined by the C language standard. A party with no privileges who can place a very large value into data that an application encodes may, depending on how the native extension was built, cause a write outside the bounds of an allocated buffer inside the application's own process.","modified":"2026-09-26T08:47:28.281707810Z","published":"2026-09-24T19:17:20.963Z","upstream":["CVE-2026-96749"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-96749"}],"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","4.7.3-1","4.7.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-96749.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"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-96749.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"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-96749.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:H/VI:H/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"}]}