CVE-2026-104252
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.
How to fix
- linuxfoundation vitess23.0.5, 24.0.2 or later
- vitess.io/vitess0.23.5, 0.24.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxfoundation vitess | v < 23.0.5, 24.0.0 ≤ v < 24.0.2 | 23.0.5, 24.0.2 |
| vitess.io/vitessGo | v < 0.23.5, 0.24.0 ≤ v < 0.24.2 | 0.23.5, 0.24.2 |
| microsoft azl3_vitess_19.0.4-14 | No range specified | — |
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