CVE-2026-27969 – Vitess users with backup storage access can write to arbitrary file paths on restore

CVE ID : CVE-2026-27969

Published : Feb. 26, 2026, 2:16 a.m. | 52 minutes ago

Description : Vitess is a database clustering system for horizontal scaling of MySQL. Prior to versions 23.0.3 and 22.0.4, anyone with read/write access to the backup storage location (e.g. an S3 bucket) can manipulate backup manifest files so that files in the manifest — which may be files that they have also added to the manifest and backup contents — are written to any accessible location on restore. This is a common path traversal security issue. This can be used to provide that attacker with unintended/unauthorized access to the production deployment environment — allowing them to access information available in that environment as well as run any additional arbitrary commands there. Versions 23.0.3 and 22.0.4 contain a patch. No known workarounds are available.

Severity: 9.3 | CRITICAL

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