Packetbeats MongoDB Protocol Parser Array Index Validation Bypass
CVE-2026-0529 Published on January 14, 2026
Improper Validation of Array Index in Packetbeat Leading to Overflow Buffers
Improper Validation of Array Index (CWE-129) in Packetbeats MongoDB protocol parser can allow an attacker to cause Overflow Buffers (CAPEC-100) through specially crafted network traffic. This requires an attacker to send a malformed payload to a monitored network interface where MongoDB protocol parsing is enabled.
Vulnerability Analysis
Weakness Type
What is an out-of-bounds array index Vulnerability?
The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.
CVE-2026-0529 has been classified to as an out-of-bounds array index vulnerability or weakness.
Affected Versions
Elastic Packetbeat:- Version 7.0.0, <= 7.17.29 is affected.
- Version 8.0.0, <= 8.19.9 is affected.
- Version 9.0.0, <= 9.1.9 is affected.
- Version 9.2.0, <= 9.2.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.