CVE-2026-27969CWE-22

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

Critical · published February 26, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
49.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
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
EPSS
0.00619 · 49.0th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-02-26T01:52Z
EPSS history
Timeline
  • 26 FEB 01:52Z
    Vitess users with backup storage access can write to arbitrary file paths on restore
    cvelistv5