Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/vectordotdev/vector/commit/3162ed1a2e5e8d3f210134607518a26aa0
- 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
FAQ
What is CVE-2026-77619?
CVE-2026-77619 is a documented vulnerability. 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 ...
How severe is CVE-2026-77619?
CVSS scoring is not yet available for CVE-2026-77619. Check NVD for updates.
Is there a patch for CVE-2026-77619?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.