CVE-2026-77621
Severity not reportedVector is a high-performance observability data pipeline.
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 products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/vectordotdev/vector/commit/6951064ed1d295fbff67a5ba7da5971fc6f58c46 security-advisories@github.com
- https://github.com/vectordotdev/vector/commit/8832452f57afb536ea0de53a093f9fd1b669ccec security-advisories@github.com
- https://github.com/vectordotdev/vector/pull/25820 security-advisories@github.com
- https://github.com/vectordotdev/vector/pull/25830 security-advisories@github.com
- https://github.com/vectordotdev/vector/releases/tag/v0.57.0 security-advisories@github.com
- https://github.com/vectordotdev/vector/security/advisories/GHSA-6342-xwvw-c637 security-advisories@github.com