CVE-2026-77621 | BDVDB-2026-377797 Detail
vectordotdevvector
Description#
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.
Impact#
Per CVSS v4.0: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.
Weaknesses#
References#
- https://github.com/vectordotdev/vector/security/advisories/GHSA-6342-xwvw-c637
- https://github.com/vectordotdev/vector/pull/25820
- https://github.com/vectordotdev/vector/pull/25830
- https://github.com/vectordotdev/vector/commit/6951064ed1d295fbff67a5ba7da5971fc6f58c46
- https://github.com/vectordotdev/vector/commit/8832452f57afb536ea0de53a093f9fd1b669ccec
- https://github.com/vectordotdev/vector/releases/tag/v0.57.0
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.