{"id":"CVE-2026-84968","title":"An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is …","summary":"An out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is …","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-125"],"vendor":"mongodb","product":"php_driver","affected":["php_driver >= 1.15.0, < 1.21.9","php_driver >= 2.0.0, < 2.1.9","php_driver >= 2.2.0, < 2.5.2"],"patched":["php_driver 2.5.2"],"published":"2026-09-03","updated":"2026-09-10","sourceUpdated":"2026-09-10T20:39:21.967","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84968","references":[{"url":"https://jira.mongodb.org/browse/PHPC-2744","label":"cna@mongodb.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84968.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-84968"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84968"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.0033,"epssPercentile":0.23342,"ingestedAt":"2026-09-08T19:08:49.591Z","slug":"CVE-2026-84968","body":"## Overview\n\nAn out-of-bounds read in the BSON decoding component of the MongoDB PHP driver may allow an unauthenticated party who supplies specially formed input to have a small amount of adjacent process memory copied into an error message that is returned to application code. This may result in unintended disclosure of limited memory contents.\n\n## Affected\n\n- `php_driver >= 1.15.0, < 1.21.9`\n- `php_driver >= 2.0.0, < 2.1.9`\n- `php_driver >= 2.2.0, < 2.5.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `php_driver 2.5.2`\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84968.json)","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}