vitessio vitess up to 22.0.3/23.0.2 Manifest File os command injection

Summaryinfo

A vulnerability was found in vitessio vitess up to 22.0.3/23.0.2 and classified as critical. Impacted is an unknown function of the component Manifest File Handler. The manipulation results in os command injection. This vulnerability is identified as CVE-2026-27965. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in vitessio vitess up to 22.0.3/23.0.2. It has been classified as critical. Affected is an unknown code of the component Manifest File Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-27965 since 02/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

Upgrading to version 22.0.4 or 23.0.3 eliminates this vulnerability. Applying the patch 4c0173293907af9cb942a6683c465c3f1e9fdb5c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-8818). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• vitessio

Name

• vitess

Version

• 22.0.0
• 22.0.1
• 22.0.2
• 22.0.3
• 23.0.0
• 23.0.1
• 23.0.2

License

• open-source

Website

• Product: https://github.com/vitessio/vitess/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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