{"id":"GHSA-86gh-39m5-hhg6","summary":"Duplicate Advisory: PYTHON-6110 Out-of-bounds read in BSON decoding via a malformed Regex element","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-98qm-wvgf-w4cf. This link is maintained to preserve external references.\n\n## Original Description\nThe 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path does not reach this code.","modified":"2026-10-27T15:47:24.276725900Z","published":"2026-10-08T21:33:28Z","withdrawn":"2026-10-27T15:36:26Z","database_specific":{"cwe_ids":["CWE-125"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-10-27T15:36:26Z","nvd_published_at":"2026-10-08T21:17:51Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106435"},{"type":"WEB","url":"https://jira.mongodb.org/browse/PYTHON-6110"}],"affected":[{"package":{"name":"pymongo","ecosystem":"PyPI","purl":"pkg:pypi/pymongo"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.9.0"},{"last_affected":"4.18.2"}]}],"versions":["3.10.0","3.10.1","3.11.0","3.11.1","3.11.2","3.11.3","3.11.4","3.12.0","3.12.1","3.12.2","3.12.3","3.13.0","3.9.0","4.0","4.0.1","4.0.2","4.1.0","4.1.1","4.10.0","4.10.1","4.11","4.11.1","4.11.2","4.11.3","4.12.0","4.12.1","4.13.0","4.13.0.dev0","4.13.1","4.13.2","4.14.0","4.14.1","4.15.0","4.15.1","4.15.2","4.15.3","4.15.4","4.15.5","4.16.0","4.16.0.dev0","4.17.0","4.18.0","4.18.1","4.18.2","4.2.0","4.3.2","4.3.3","4.4.0","4.4.0b0","4.4.1","4.5.0","4.6.0","4.6.1","4.6.2","4.6.3","4.7.0","4.7.1","4.7.2","4.7.3","4.8.0","4.8.0b0","4.9","4.9.1","4.9.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-86gh-39m5-hhg6/GHSA-86gh-39m5-hhg6.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"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"}]}