CVE-2026-81524Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C Driver
Updated under an hour ago ()
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It affects MongoDB C Driver. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A weakness in the MongoDB C Driver allows special elements in caller-supplied database and collection name components to pass without sanitization when the driver composes the target namespace for an operation. An application that incorporates untrusted input into these name components can have operations directed at a resource other than the one intended.
- CVSS
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-99
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB C Driver mongodb:c_driver (from the name) | from 1.0.0 before 2.5.1 | CNA record |
mongodb c_driver mongodb:c_driver | from 1.0.0 before 2.5.1 | NVD |
References
- https://jira.mongodb.org/browse/CDRIVER-6424vendor-advisory
- https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.1product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.