{"id":"CVE-2026-120500","title":"An Otter Wiki before 2.26.2 Stored XSS via Math Code Block","summary":"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 s…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"redimp","product":"otterwiki","affected":["otterwiki >= 2.0.0 < 2.26.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-02T16:05:05.332198Z"},"published":"2026-11-02","updated":"2026-11-02","sourceUpdated":"2026-11-02T16:05:16.864Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120500","references":[{"url":"https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481"},{"url":"https://github.com/redimp/otterwiki/releases/tag/v2.26.2","label":"otterwiki v2.26.2 Release Notes"},{"url":"https://www.vulncheck.com/advisories/an-otter-wiki-before-2.26.2-stored-xss-via-math-code-block","label":"VulnCheck Advisory: An Otter Wiki before 2.26.2 Stored XSS via Math Code Block"}],"tags":["cve.org"],"epss":0.00288,"epssPercentile":0.21429,"ingestedAt":"2026-11-05T19:30:42.701Z","slug":"CVE-2026-120500","body":"## Overview\n\nAn 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.\n\n## Affected\n\n- `otterwiki >= 2.0.0 < 2.26.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}