CVE-2026-120500 Details
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.
A stored cross-site scripting vulnerability has been identified in Otter Wiki versions prior to 2.26.2. The issue resides in the OtterwikiMdRenderer.block_code function, where attackers, including anonymous users by default, can inject arbitrary scripts. This is achieved by placing HTML within a math fenced code block, which is rendered without escaping and executed for every viewer of the page.
Users are advised to update Otter Wiki to version 2.26.2 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 2, 2026CISA-ADP
Assessed Nov 2, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Otter Wiki | >= 2.0.0, < 2.26.2 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 2, 2026 | New CVE Received | [email protected] |
| Nov 2, 2026 | CVE Modified | CISA-ADP |
Volerion