CVE-2026-77621

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.

CVSS

No CVSS.

References

Link	Resource
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

Configurations

No configuration.

History

22 Sep 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-22 16:17

Updated : 2026-09-26 00:16

NVD link : CVE-2026-77621

Mitre link : CVE-2026-77621

CVE.ORG link : CVE-2026-77621

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-73

External Control of File Name or Path

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