CVE-2026-65959

MEDIUM 5.3

Vitess: Missing authorization on vttablet /debug/vrlog exposes live VReplication SQL data

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

Vitess is a database clustering system for horizontal scaling of MySQL. In 24.0.2 and earlier, the /debug/vrlog endpoint registered by addHttpEndpoint() in go/vt/vttablet/tabletmanager/vreplication/vrlog.go invokes vrlogStatsHandler() without acl.CheckAccessHTTP(r, acl.DEBUGGING), unlike comparable debug endpoints. A remote caller who can reach the vttablet debug HTTP port can bypass the configured security policy and stream VrLogStats data produced from NewVrLogStats().Send(), including literal SQL statements and bound application values from MoveTables, Reshard, Materialize, and vitess-strategy Online DDL workflows

CWE	CWE-862
Vendor	vitessio
Product	vitess
Published	Aug 18, 2026
Last Updated	Aug 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

vitessio / vitess

<= 24.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/vitessio/vitess/security/advisories/GHSA-mhc4-g3wh-cw7m github.com: https://github.com/vitessio/vitess/commit/4c58cd70edc6b03d61cb65842c342ac08341e64f github.com: https://github.com/vitessio/vitess/commit/657662e78bde1c82df680e9cc43a686d619f8094 github.com: https://github.com/vitessio/vitess/commit/d929225a450027406687d27af8dca45620945ceb