CVE-2026-77621
Vector is a high-performance observability data pipeline.
Impact
Vector is a high-performance observability data pipeline. From 0.10.0 until 0.57.0, the file sink renders its templated path from event fields and opens the result without confining it to an intended directory. When an untrusted source supplies an event field used by the path template, the value can contain an absolute path or parent-directory traversal, causing Vector to create parent directories and create or overwrite files outside the intended location with the Vector process privileges. The resulting file write can modify sensitive files and can lead to code execution when a scheduled task, authorization file, or subsequently executed script is targeted. This issue is fixed in version 0.57.0.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/vectordotdev/vector/commit/6951064ed1d295fbff67a5ba7da5971fc6f58c46
- https://github.com/vectordotdev/vector/commit/8832452f57afb536ea0de53a093f9fd1b669ccec
- https://github.com/vectordotdev/vector/pull/25820
- https://github.com/vectordotdev/vector/pull/25830
- https://github.com/vectordotdev/vector/releases/tag/v0.57.0
- https://github.com/vectordotdev/vector/security/advisories/GHSA-6342-xwvw-c637