CVE-2026-27965
Critical · 9.9CVSS
9.9
EPSS
0.7%
Published
Feb 26, 2026
CISA due date
—
The record
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 arbitrary code is later executed when that backup is restored. 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. Some workarounds are available. Those who intended to use an external decompressor then can always specify that decompressor command in the `--external-decompressor` flag value for `vttablet` and `vtbackup`. That then overrides any value specified in the manifest file. Those who did not intend to use an external decompressor, nor an internal one, can specify a value such as `cat` or `tee` in the `--external-decompressor` flag value for `vttablet` and `vtbackup` to ensure that a harmless command is always used.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | vitess.io/vitess | 0 | No fix |
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0 | 0.0.20260317T205859-150000.1.152.1 |
Related vulnerabilities
- GHSA-8g8j-r87h-p36x Vitess users with backup storage access can gain unauthorized access to production… Same vulnerability
- GHSA-r492-hjgh-c9gw Vitess users with backup storage access can write to arbitrary file paths on restore Also affects vitess.io/vitess
- CVE-2026-27969 Vitess is a database clustering system for horizontal scaling of MySQL. Also affects vitess.io/vitess
- CVE-2026-33990 Docker Model Runner (DMR) is software used to manage, run, and deploy AI models using… Also affects govulncheck-vulndb
- CVE-2026-34204 MinIO is a high-performance object storage system. Also affects govulncheck-vulndb
- CVE-2026-34041 act is a project which allows for local running of github actions. Also affects govulncheck-vulndb
- CVE-2026-34042 act is a project which allows for local running of github actions. Also affects govulncheck-vulndb
- CVE-2026-34040 Moby is an open source container framework. Also affects govulncheck-vulndb