Vulnerability · Published Feb 26, 2026 · Assigned by GitHub_M
CVE-2026-27969Vitess users with backup storage access can write to arbitrary file paths on restore
Critical 9.3
In plain English
A critical-severity path traversal in vitess from vitessio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | vitess.io/vitess | 0.23.3 | GHSA-r492-hjgh-c9gw |
| Go | vitess.io/vitess | 0.22.4 | GHSA-r492-hjgh-c9gw |
| Go | vitess.io/vitess | 0.22.4, 0.23.3 | GO-2026-4570 |
Affected products (as reported)
Weakness: CWE-22 · 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
References
- https://github.com/vitessio/vitess/security/advisories/GHSA-r492-hjgh-c9gw x_refsource_CONFIRM
- https://github.com/vitessio/vitess/pull/19470 x_refsource_MISC
- https://github.com/vitessio/vitess/commit/c565cab615bc962bda061dcd645aa7506c59ca4a x_refsource_MISC