{"affected":[{"defaultStatus":"unaffected","product":"C Driver","source":"CNA: mongodb","vendor":"MongoDB","versions":[{"lessThanOrEqual":"1.30.14","status":"affected","version":"1.25.0","versionType":"semver"},{"lessThanOrEqual":"2.5.7","status":"affected","version":"2.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-120684","cwes":["CWE-908"],"description":"A memory-initialization flaw in the legacy GridFS file handling of the MongoDB C Driver can cause uninitialized process memory to be treated as valid file content and stored on the server. A database user holding ordinary write access to a shared storage area can arrange conditions under which an application later appends to such a file and writes that memory into records the same user is permitted to read, which may result in unintended disclosure of sensitive information from the application's process, including credentials.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6,"severity":"medium","source":"CNA: mongodb","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.5,"severity":"medium","source":"CNA: mongodb","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},{"score":6,"severity":"medium","source":"NVD: cna@mongodb.com","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/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","version":"4.0"},{"score":6.5,"severity":"medium","source":"NVD: cna@mongodb.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1793740624137,"publishedAt":1793731242288,"references":[{"source":"CNA: mongodb","tags":[],"url":"https://jira.mongodb.org/browse/CDRIVER-6508"},{"source":"cna@mongodb.com","tags":[],"url":"https://jira.mongodb.org/browse/CDRIVER-6508"}],"remediation":[],"revision":"584ccc7cccc9b8def4c1b46d986561c9b464ddd7dc13f6fbb4c1bc06870ee52f","sources":[{"modifiedAt":1793736670303,"name":"CNA: mongodb","retrievedAt":1793740206819,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120684"},{"modifiedAt":1793740624137,"name":"NVD","retrievedAt":1793751697011,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120684"}],"ssvc":{"assessedAt":1793736655996,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"MongoDB C Driver GridFS gap lets a shared writer recover a protected client's password","updatedAt":1793751697011}