CVE-2026-77620
Vector: Unauthenticated denial of service in the `logstash` source via nested compressed frames (stack exhaustion and decompression amplification).
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-409 |
| Vendor | vectordotdev |
| Product | vector |
| Published | Sep 22, 2026 |
| Last Updated | Sep 22, 2026 |
Stay Ahead of the Next One
Get instant alerts for vectordotdev vector
Be the first to know when new unknown vulnerabilities affecting vectordotdev vector are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
vectordotdev / vector
>= 0.15.0, < 0.57.0
References
github.com: https://github.com/vectordotdev/vector/security/advisories/GHSA-qp6f-fpfx-4gg6 github.com: https://github.com/vectordotdev/vector/pull/25825 github.com: https://github.com/vectordotdev/vector/commit/57fed991083c9a43d5fda2d5b3bf4718aedf6526 github.com: https://github.com/vectordotdev/vector/releases/tag/v0.57.0