{"id":"GHSA-86gh-39m5-hhg6","title":"Duplicate Advisory: PYTHON-6110 Out-of-bounds read in BSON decoding via a malformed Regex element","summary":"Duplicate Advisory: PYTHON-6110 Out-of-bounds read in BSON decoding via a malformed Regex element","severity":"medium","cvss":5.1,"cwe":["CWE-125"],"vendor":"pymongo","product":"pymongo","ecosystem":"pip","affected":["pymongo >= 3.9.0, <= 4.18.2"],"published":"2026-10-08","updated":"2026-10-27","sourceUpdated":"2026-10-27T15:36:26Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-86gh-39m5-hhg6","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106435"},{"url":"https://jira.mongodb.org/browse/PYTHON-6110"},{"url":"https://github.com/advisories/GHSA-86gh-39m5-hhg6"}],"tags":["ghsa","pip"],"ingestedAt":"2026-10-27T16:11:58.708Z","slug":"GHSA-86gh-39m5-hhg6","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-98qm-wvgf-w4cf.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.\n\n## Affected packages\n\n- `pymongo >= 3.9.0, <= 4.18.2`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":28.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}