CVE Catalog

CVE-2026-120500

MediumCVSS 6.1
Published: Updated: Translated: NVD NIST

Summary

Otter Wiki before 2.26.2 contains a stored cross-site scripting vulnerability in OtterwikiMdRenderer.block_code. Users who can edit pages (including anonymous users under the default configuration) can place HTML inside a math fenced code block, which is rendered unescaped and executes for every viewer of the page.

Risk Assessment

An attacker can execute arbitrary script in the browser of every user visiting the infected page, risking session theft or account takeover. The risk is high because anonymous users can edit pages under the default configuration.

Recommendation

Update Otter Wiki to version 2.26.2 or later. Consider restricting anonymous editing until the fix is deployed.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS