{"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-2026-120955","cwes":["CWE-476"],"description":"The GridFS file download API in the MongoDB C Driver does not check the result of an internal operation under certain error conditions during file retrieval. This can cause the process to terminate when stream operations continue. A user who can influence file download parameters can trigger this condition, which may result in service unavailability for applications using the affected API.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: mongodb","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: mongodb","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: cna@mongodb.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/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","version":"4.0"},{"score":7.5,"severity":"high","source":"NVD: cna@mongodb.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793737092697,"publishedAt":1793731359523,"references":[{"source":"CNA: mongodb","tags":[],"url":"https://jira.mongodb.org/browse/CDRIVER-6494"},{"source":"cna@mongodb.com","tags":[],"url":"https://jira.mongodb.org/browse/CDRIVER-6494"}],"remediation":[],"revision":"542a59fad47266370814edd9dee4b16909f2b5abfc3cc725e9ef03cd48cdfc70","sources":[{"modifiedAt":1793736013969,"name":"CNA: mongodb","retrievedAt":1793740222870,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120955"},{"modifiedAt":1793737092697,"name":"NVD","retrievedAt":1793751697512,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120955"}],"ssvc":{"assessedAt":1793736000676,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"MongoDB C Driver Modern GridFS mongoc_gridfs_bucket_download_to_stream() Aborts Application on Malformed GridFS Metadata","updatedAt":1793751697512}