{"affected":[{"defaultStatus":"unaffected","ecosystem":"pypi","packageName":"otterwiki","product":"otterwiki","source":"CNA: VulnCheck","vendor":"redimp","versions":[{"lessThan":"2.26.2","status":"affected","version":"2.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-120500","cwes":["CWE-79"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","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","version":"4.0"},{"score":6.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":6.1,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1793636254007,"publishedAt":1793633496427,"references":[{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/redimp/otterwiki/releases/tag/v2.26.2"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/an-otter-wiki-before-2.26.2-stored-xss-via-math-code-block"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/redimp/otterwiki/releases/tag/v2.26.2"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/an-otter-wiki-before-2.26.2-stored-xss-via-math-code-block"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481"}],"revision":"edd76c2761778bc6054ddce98a3246953b3287423251fd04ec9ba6f42623a401","sources":[{"modifiedAt":1793635516864,"name":"CNA: VulnCheck","retrievedAt":1793639360621,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120500"},{"modifiedAt":1793636254007,"name":"NVD","retrievedAt":1793643558591,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120500"}],"ssvc":{"assessedAt":1793635505332,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"An Otter Wiki before 2.26.2 Stored XSS via Math Code Block","updatedAt":1793643558591}