{"action":"Upgrade pymongo to 4.18.2 or later.","affected":[{"fixed":"4.18.2","introduced":"0"}],"component":"pymongo","cve_ids":["CVE-2026-96749"],"ecosystem":"PyPI","epss":0.00188,"exploited":false,"fixed_versions":["4.18.2"],"ghsa_id":"GHSA-v4x9-3549-crwv","id":"tcs_01M5KFZ754K41DHWQAGP3D3NX9","modified_at":"2026-10-15T14:56:20.520518785Z","published_at":"2026-10-05T23:47:10Z","references":["https://osv.dev/vulnerability/GHSA-v4x9-3549-crwv","https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-v4x9-3549-crwv","https://nvd.nist.gov/vuln/detail/CVE-2026-96749","https://github.com/mongodb/mongo-python-driver/pull/3066","https://github.com/mongodb/mongo-python-driver/commit/640dd2383a1a2fb1a10e5222d50ebc0b22a61bd7","https://github.com/mongodb/mongo-python-driver/commit/6ab44be0e97c9d1d5a23725c4978fb25f3249485","https://github.com/mongodb/mongo-python-driver","https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst","https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2","https://www.mongodb.com/community/forums/t/pymongo-4-18-2-released/343732"],"severity":{"label":"high","score":8.4},"sources":[{"source":"osv","source_id":"GHSA-v4x9-3549-crwv","url":"https://osv.dev/vulnerability/GHSA-v4x9-3549-crwv"}],"summary":"PyMongo: PYTHON-5996 Heap out-of-bounds write via signed size overflow in BSON document encoding"}