CVE-2026-9100
published 2026-05-20CVE-2026-9100: The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS…
PriorityP434medium5.9CVSS 3.1
AVNACHPRLUINSUCLINAH
EPSS
0.28%
19.9th percentile
The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mongodb_inc | c_driver | >= 1.0 < 1.30.8 | 1.30.8 |
| mongodb_inc | c_driver | >= 2.0 < 2.2.4 | 2.2.4 |
CVSS provenance
nvdv3.15.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H
nvdv4.06.0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/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
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GHSA
GHSA-87jr-c2qj-3qrg: The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation
ghsa_unreviewed·2026-05-20
CVE-2026-9100 [MEDIUM] CWE-1285 GHSA-87jr-c2qj-3qrg: The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation
The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).
VulDB
MongoDB C Driver up to 1.30.7/2.2.3 Legacy GridFS API improper validation of specified index, position, or offset in input
vuldb·2026-05-20·CVSS 6.0
CVE-2026-9100 [MEDIUM] MongoDB C Driver up to 1.30.7/2.2.3 Legacy GridFS API improper validation of specified index, position, or offset in input
A vulnerability identified as problematic has been detected in MongoDB C Driver up to 1.30.7/2.2.3. This affects an unknown part of the component Legacy GridFS API. Performing a manipulation results in improper validation of specified index, position, or offset in input.
This vulnerability is known as CVE-2026-9100. Remote exploitation of the attack is possible. No exploit is available.
You should upgrade the affected component.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata [fedora-all]
bugzilla·2026-05-21·CVSS 6.0
CVE-2026-9100 [MEDIUM] CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata [fedora-all]
CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata [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.
Discussion:
Fixed in 1.30.8 and 2.2.4 already in stable branches
Bugzilla
CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata [epel-all]
bugzilla·2026-05-21·CVSS 6.0
CVE-2026-9100 [MEDIUM] CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata [epel-all]
CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata [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.
Discussion:
Fixed in 1.30.8 and 2.2.4 already in stable branches
Bugzilla
CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata
bugzilla·2026-05-20·CVSS 6.0
CVE-2026-9100 [MEDIUM] CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata
CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata
The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).
2026-05-20
Published