Medium [CVE-2026-101800] unauthorized data access via improper privilege controls
This medium-severity Red Hat Linux advisory covers CVE-2026-101800; related products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat package: mysql8.4.
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Summary
unauthorized data access via improper privilege controls. Red Hat rates this moderate (CVSS 6.8).
Weakness: CWE-269.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat package: mysql8.4.
- 8.4.0-8
- 4.12
- 9.7.0-9
- 26.7.0-26
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
Mitigation checklist
- To reduce exposure to this vulnerability, restrict network reachability to the MySQL database server so that only trusted hosts and application tiers can establish connections. 1. Restrict incoming traffic using firewalld to only authorized IP addresses: ```bash firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<trusted_ip>" port port="3306" protocol="tcp" accept' firewall-cmd --reload ``` 2. If remote database connections are not required, bind the MySQL daemon to the local loopback interface by adding the following line under the `[mysqld]` section in `/etc/my.cnf` or `/etc/my.cnf.d/mysql-server.cnf`: ```ini [mysqld] bind-address = 127.0.0.1 ``` Apply the configuration change by restarting the daemon: ```bash systemctl restart mysqld ``` Caveats: Restricting access to specific addresses or binding to localhost prevents unauthorized hosts from reaching the service, but external applications requiring database access must be explicitly permitted. Warning: Modifying firewall rules or restarting the mysqld service will terminate existing database sessions and temporarily disrupt connectivity for running services.
Official advisory · high-confidence parse· fetched 7 days ago·verify at source
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