CVE-2026-0529

Improper Validation of Array Index in Packetbeat Leading to Overflow Buffers

State: Published
Severity: 6.5 Medium
Published: Jan 14, 2026
Updated: Jan 14, 2026
Reserved: Dec 19, 2025

Description

Improper Validation of Array Index (CWE-129) in Packetbeat’s 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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-129 Improper Validation of Array Index

Affected Products

Product	Versions
PacketbeatElastic	7.0.0 through 7.17.29Affected 8.0.0 through 8.19.9Affected 9.0.0 through 9.1.9Affected 9.2.0 through 9.2.3Affected

References

https://discuss.elastic.co/t/packetbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-02/384520

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