CVE-2026-104252
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.
- CVSS 3.1
- 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-25)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linuxfoundation:vitess
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v75v-6fpf-gvw8 | Go | vitess.io/vitess | <0.23.5 | 0.23.5 |
| GHSA-v75v-6fpf-gvw8 | Go | vitess.io/vitess | >=0.24.0 <0.24.2 | 0.24.2 |
References
- https://github.com/vitessio/vitess/commit/3140c1846cd120db34f33b2083139b4ab638aed2
- https://github.com/vitessio/vitess/commit/976e1e0d78f9d29d02e5e31b4aa7e180648f08af
- https://github.com/vitessio/vitess/commit/c1ed96302e658190168c971afdac730cf70e43f7
- https://github.com/vitessio/vitess/pull/20255
- https://github.com/vitessio/vitess/pull/20273