{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-120500","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-02T15:17:31.034Z","datePublished":"2026-11-02T15:31:36.427Z","dateUpdated":"2026-11-02T16:05:16.864Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-02T15:31:36.427Z"},"datePublic":"2026-10-31T00:00:00.000Z","title":"An Otter Wiki before 2.26.2 Stored XSS via Math Code Block","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","cweId":"CWE-79","type":"CWE"}]}],"affected":[{"vendor":"redimp","product":"otterwiki","packageURL":"pkg:pypi/otterwiki","repo":"https://github.com/redimp/otterwiki","defaultStatus":"unaffected","versions":[{"version":"2.0.0","status":"affected","versionType":"semver","lessThan":"2.26.2"}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/redimp/otterwiki/commit/b2e91d20ed36c01ce140d18698f9abb90685d481","tags":["patch"]},{"url":"https://github.com/redimp/otterwiki/releases/tag/v2.26.2","tags":["release-notes"],"name":"otterwiki v2.26.2 Release Notes"},{"name":"VulnCheck Advisory: An Otter Wiki before 2.26.2 Stored XSS via Math Code Block","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/an-otter-wiki-before-2.26.2-stored-xss-via-math-code-block"}],"credits":[{"lang":"en","value":"Zachariah Mithani (AploSec)","type":"finder"},{"lang":"en","value":"Ralph Thesen","type":"remediation developer"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-02T16:05:05.332198Z","id":"CVE-2026-120500","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-02T16:05:16.864Z"}}]}}