CVE-2026-27969 PUBLISHED

Vitess users with backup storage access can write to arbitrary file paths on restore

Assigner: GitHub_M
Reserved: 25.02.2026 Published: 26.02.2026 Updated: 26.02.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:L/SI:H/SA:H
CVSS Score: 9.3

Product Status

Vendor vitessio
Product vitess
Versions
  • Version < 22.0.4 is affected
  • Version >= 23.0.0, < 23.0.3 is affected

References

Problem Types

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE