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CVE-2026-104252

9.8 · CRITICAL

Vitess is a database clustering system for horizontal scaling of MySQL.

Published Oct 13, 2026linuxfoundationCWE-79EPSS 1.17%

Overview

CVE-2026-104252 is a critical-severity vulnerability affecting linuxfoundation vitess. It was published on October 13, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Vitess is a database clustering system for horizontal scaling of MySQL. Prior to 23.0.5 and 24.0.2, twopczHandler in go/vt/vttablet/tabletserver/twopcz.go writes the Action and dtid form values from the vttablet and vtcombo /twopcz HTTP debug endpoint into a text/html response without HTML escaping. Under the default allow-all ACL policy, a remote unauthenticated attacker can send an operator a crafted request that executes script in the operator's browser after the request is opened. The script runs with the vttablet debug origin and can read same-origin diagnostic endpoints that expose query, transaction, environment, variable, or profiling data available in that deployment. This issue is fixed in versions 23.0.5 and 24.0.2.

Remediation

Check the references section for vendor advisories and patches from linuxfoundation. Update vitess to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxfoundationvitess>= 0, < 23.0.5Affected

References

GitHubgithub.com/vitessio/vitess/commit/3140c1846cd120db34f33b2083139b4ab638aed2GitHubgithub.com/vitessio/vitess/commit/976e1e0d78f9d29d02e5e31b4aa7e180648f08afGitHubgithub.com/vitessio/vitess/commit/c1ed96302e658190168c971afdac730cf70e43f7GitHubgithub.com/vitessio/vitess/pull/20255GitHubgithub.com/vitessio/vitess/pull/20273GitHubgithub.com/vitessio/vitess/pull/20274GitHubgithub.com/vitessio/vitess/releases/tag/v23.0.5GitHubgithub.com/vitessio/vitess/releases/tag/v24.0.2GitHubgithub.com/vitessio/vitess/security/advisories/GHSA-v75v-6fpf-gvw8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-104252?

CVE-2026-104252 is a critical-severity vulnerability affecting linuxfoundation vitess. It was published on October 13, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-104252?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-104252?

Check the references section for vendor advisories and patches from linuxfoundation. Update vitess to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-104252?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-104252 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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