ACTIVELY EXPLOITED
CVE-2025-14847: MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency Vulnerability
| Vendor | MongoDB |
|---|---|
| Product | MongoDB and MongoDB Server |
| Actively exploited | Yes |
| Added to CISA KEV | 29 Dec 2025 |
| CISA federal deadline | 19 Jan 2026 |
| Weakness (CWE) | CWE-130 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
MongoDB Server contains an improper handling of length parameter inconsistency vulnerability in Zlib compressed protocol headers. This vulnerability may allow a read of uninitialized heap memory by an unauthenticated client.
SOURCES
Other MongoDB flaws
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.