CVE-2026-90448: Cisa Malcolm

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A deployment mode intended to expose only read access to stored data proxies a set of application programming interface routes without restricting which request methods are allowed. One such route accepts a request that creates or overwrites a stored record, including an attacker-chosen identifier, using the application's own elevated backend credentials. This allows an authenticated user on a deployment intended to be read-only to forge or overwrite stored records that should not be modifiable in that deployment mode.

Affected products

• Cisa Malcolm: before v26.06.0 (fixed in v26.06.0)

Published 2026-09-11. Last modified 2026-10-02.