MongoDB's 'Mongobleed' Vulnerability Actively Exploited, 87,000 Servers at Risk

"Mongobleed" vulnerability (CVE-2025-14847) threatens 87,000 MongoDBs, exposing sensitive data. Urgent patching advised by Jan 19, 2026.

By Content Team

Jan 2, 2026

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A critical MongoDB vulnerability dubbed "Mongobleed" (CVE-2025-14847) is being actively exploited in the wild, allowing attackers to steal sensitive data from server memory without authentication. The flaw affects over 87,000 exposed MongoDB instances worldwide and carries a CVSS score of 8.7.

CISA added the vulnerability to its Known Exploited Vulnerabilities catalog on December 29, 2025, giving federal agencies until January 19, 2026 to patch. The bug stems from improper handling of compressed network messages, letting attackers extract database credentials, API keys, and personal data by sending specially crafted packets.

Security experts compare it to the infamous Heartbleed vulnerability, noting that pre-authentication exploits bypass all traditional security controls. Organizations should immediately patch affected MongoDB versions 4.4 through 8.2, rotate all potentially compromised credentials, and implement network segmentation to prevent direct internet exposure of database servers.

Source: Cyber Security News

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