{"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"}}]}}