Is CVE-2026-120500 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-120500?

CVE-2026-120500 has a CVSS v3 severity of MEDIUM (6.1).

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CVE-2026-120500

Description

An Otter Wiki before 2.26.2 contains a stored cross-site scripting vulnerability in OtterwikiMdRenderer.block_code that allows attackers who can edit pages, including anonymous users under the default configuration, to inject arbitrary script. Attackers can place HTML inside a math fenced code block, which is rendered unescaped and executes for every viewer of the page.