CVE-2026-70689 Auth bypass in Oracle Essbase

Critical 9.8 Published 18 Aug 2026 Updated 25 Aug 2026

Unauthenticated attackers can take over Oracle Essbase via network access, leading to full system compromise.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-70689?

CVE-2026-70689 is a critical authentication bypass vulnerability in Oracle Essbase, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in Oracle Essbase (component: Infrastructure). The supported version that is affected is 21.8.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Essbase. Successful attacks of this vulnerability can result in takeover of Oracle Essbase. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Weakness: CWE-284

Which versions are affected by CVE-2026-70689?

It affects 1 product.

Products include Oracle Essbase.

How do I fix CVE-2026-70689?

No fix has been published for CVE-2026-70689 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-70689 being exploited?

There is no known exploitation of CVE-2026-70689 in the wild and no public exploit code.

All Oracle Essbase vulnerabilities

Sources

Also known as GHSA-998x-p9h7-3r93.