CVE-2026-77619

Vector is a high-performance observability data pipeline. From 0.15.0 until 0.57.0, the logstash source reads a 32-bit compressed-frame length from the network and uses it to size an in-memory buffer without an upper bound. An unauthenticated remote peer that can reach the default 0.0.0.0:5044 listener can send a minimal frame declaring a multi-gigabyte payload, causing an excessive allocation that can abort Vector or invoke the host OOM killer. Because the allocation follows the declared length rather than bytes transmitted, the attacker has low resource cost, and process termination can halt log ingestion for every tenant on a shared pipeline. This issue is fixed in version 0.57.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/vectordotdev/vector/commit/3162ed1a2e5e8d3f210134607518a26aa01e1a37
https://github.com/vectordotdev/vector/pull/25819
https://github.com/vectordotdev/vector/releases/tag/v0.57.0
https://github.com/vectordotdev/vector/security/advisories/GHSA-rrfg-9487-mhp6

Configurations

No configuration.

History

22 Sep 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-22 16:17

Updated : 2026-09-24 21:23

NVD link : CVE-2026-77619

Mitre link : CVE-2026-77619

CVE.ORG link : CVE-2026-77619

JSON object : View

Products Affected

No product.

CWE

CWE-130

Improper Handling of Length Parameter Inconsistency

CWE-789

Memory Allocation with Excessive Size Value

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