CVE-2026-58630: azure app service for linux vulnerability

What is known

Improper access control in Azure App Service allows an unauthorized attacker to elevate privileges over a network.

Business impact

Successful exploitation of CVE-2026-58630, a critical vulnerability (CVSS 10.0) affecting azure app service for linux, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.

Recommended administrator action

Confirm whether azure app service for linux is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.

Sources

• NVD
• Reference