Path Traversal in Linuxfoundation Vitess
CVE-2026-27969
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.004 (32.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linuxfoundation Vitess
- Vitessio Vitess — versions < 22.0.4, >= 23.0.0, < 23.0.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-27969?
- CVE-2026-27969 is a high-severity vulnerability in Linuxfoundation Vitess, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-02-26.
- How severe is CVE-2026-27969?
- High severity. CVSS v3 base score is 8.8 out of 10.