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.

Overview

State: PUBLISHED
Assigner (CNA): VulnCheck
CVSS severity: MEDIUM
CVSS score: 5.3 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Effective score: 5.3 / 10 MEDIUM source: CNA overview
CWE(s): CWE-79
Reserved: 2026-11-02
Published: 2026-11-02 15:31 UTC
Last updated: 2026-11-02 16:05 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120500.json

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-115252

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Affected products (1)

Vendor	Product	Versions	Platforms
redimp	otterwiki	`2.0.0` (affected)	—

Vendor references (3)

References embedded in the original CVE record by the assigning CNA.

https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481 patch
otterwiki v2.26.2 Release Notes release-notes
VulnCheck Advisory: An Otter Wiki before 2.26.2 Stored XSS via Math Code Block third-party-advisory

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120500.json.

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