CVE-2026-106431
published 2026-10-08CVE-2026-106431: An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at…
PriorityP426medium5.7CVSS 3.1
AVLACHPRNUINSUCNILAH
EPSS
0.10%
0.7th percentile
An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can corrupt adjacent process memory or terminate the process. Reaching this issue requires the application to use the BSON bulk-writer API and produce a precise cumulative document size.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mongodb | c_driver | >= 0.5.0 < 1.30.13 | 1.30.13 |
| mongodb | c_driver | >= 2.0.0 < 2.5.6 | 2.5.6 |
CVSS provenance
nvdv3.15.7MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
nvdv4.05.9MEDIUMCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/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
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No advisories linked to this vulnerability.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer [fedora-all]
bugzilla·2026-10-09·CVSS 5.7
CVE-2026-106431 [MEDIUM] CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer [fedora-all]
CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can corrupt adjacent process memory or terminate the process. Reaching this issue requires the application to use the BSON bulk-writer API and produce a precise cumulati
Bugzilla
CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer [epel-all]
bugzilla·2026-10-09·CVSS 5.7
CVE-2026-106431 [MEDIUM] CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer [epel-all]
CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can corrupt adjacent process memory or terminate the process. Reaching this issue requires the application to use the BSON bulk-writer API and produce a precise cumulative
Bugzilla
CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer
bugzilla·2026-10-08·CVSS 5.7
CVE-2026-106431 [MEDIUM] CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer
CVE-2026-106431 mongo-c-driver: mongo-c-driver: Denial of Service via off-by-one error in BSON bulk document writer
An off-by-one error in the BSON bulk document writer in the MongoDB C Driver can write one zero byte immediately past a heap allocation when a document ends at a specific buffer boundary. An actor who can influence the size of documents serialized by an embedding application can corrupt adjacent process memory or terminate the process. Reaching this issue requires the application to use the BSON bulk-writer API and produce a precise cumulative document size.
2026-10-08
Published