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CVE-2026-101720

mysql: mysql: unauthorized data modification via connection handling

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · October 21, 2026

Updated · October 24, 2026

Description

A flaw was found in MySQL connection handling. An unauthenticated remote attacker with network access can exploit this vulnerability to compromise the database server. Successful exploitation allows an attacker to perform unauthorized data modifications, resulting in the creation, alteration, or deletion of accessible data.

Statement

This vulnerability is rated as Moderate severity because, although exploitable over the network without authentication, the impact is confined to low-integrity data modification without compromising system confidentiality or causing a denial of service. In typical Red Hat environments, database servers are isolated within secured network perimeters or configured to accept connections exclusively from trusted application tiers, significantly mitigating exposure to untrusted parties.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE-306 · Missing Authentication for Critical Function