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VULNERABILITIES

CVE-2026-77620 Details

Description

Vector is a high-performance observability data pipeline. From 0.15.0 until 0.57.0, the logstash source feeds each decompressed frame back into its decoder without limiting nested compression depth. An unauthenticated remote peer that can reach the default 0.0.0.0:5044 listener can send many nested compressed frames, causing recursive decoding that exhausts the worker thread stack and aborts the process. The same nested construction amplifies decompressed input, and process termination can halt log ingestion for every tenant on a shared pipeline. This issue is fixed in version 0.57.0.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/vectordotdev/vector/commit/57fed991083c9a43d5fda2d5b3bf4718aedf6526 [email protected]
https://github.com/vectordotdev/vector/pull/25825 [email protected]
https://github.com/vectordotdev/vector/releases/tag/v0.57.0 [email protected]
https://github.com/vectordotdev/vector/security/advisories/GHSA-qp6f-fpfx-4gg6 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-409Improper Handling of Highly Compressed Data (Data Amplification)[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-77620
NVD Published Date:
Sep 22, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-77620 Details - Not Deferred