{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-129170", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-13T17:11:54.967Z", "datePublished": "2026-11-13T17:21:48.982Z", "dateUpdated": "2026-11-13T17:21:48.982Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-13T17:21:48.982Z"}, "datePublic": "2026-10-27T00:00:00.000Z", "title": "FileCodeBox 2.2.1 through 2.8.4 Stored XSS via Markdown Preview Parser Error", "descriptions": [{"lang": "en", "value": "FileCodeBox 2.2.1 through 2.8.4 contains a stored cross-site scripting vulnerability in renderMarkdownPreview, which returns unsanitized text when the marked parser throws. Unauthenticated attackers can share text with thousands of nested blockquote markers followed by HTML payloads, executing script that steals the admin token from localStorage."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "affected": [{"vendor": "vastsa", "product": "FileCodeBox", "defaultStatus": "unaffected", "versions": [{"version": "2.2.1", "lessThanOrEqual": "2.8.4", "status": "affected", "versionType": "semver"}], "packageURL": "pkg:github/vastsa/filecodebox", "repo": "https://github.com/vastsa/FileCodeBox"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "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://vul.yulun.ac.cn/20261027/filecodebox/", "tags": ["third-party-advisory"]}, {"url": "https://github.com/vastsa/FileCodeBox/issues/557", "tags": ["issue-tracking"]}, {"url": "https://github.com/vastsa/FileCodeBoxFronted/commit/4c40406d366af1583a3ba2327366b7a62d765537", "tags": ["patch"]}, {"url": "https://github.com/vastsa/FileCodeBoxFronted/blob/bcc1dbda06b772d6f4afbcc12c6f12e60bbbc7da/src/utils/content-preview.ts#L43-L57", "tags": ["technical-description"]}, {"url": "https://github.com/vastsa/FileCodeBoxFronted/blob/bcc1dbda06b772d6f4afbcc12c6f12e60bbbc7da/src/components/common/ContentPreviewModal.vue#L45-L50", "tags": ["technical-description"]}, {"name": "VulnCheck Advisory: FileCodeBox 2.2.1 through 2.8.4 Stored XSS via Markdown Preview Parser Error", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/filecodebox-2.2.1-through-2.8.4-stored-xss-via-markdown-preview-parser-error"}], "credits": [{"lang": "en", "value": "Wu Yulun", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:github/vastsa/filecodebox", "product": "FileCodeBox", "repo": "https://github.com/vastsa/FileCodeBox", "vendor": "vastsa", "versions": [{"lessThanOrEqual": "2.8.4", "status": "affected", "version": "2.2.1", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "FileCodeBox 2.2.1 through 2.8.4 contains a stored cross-site scripting vulnerability in renderMarkdownPreview, which returns unsanitized text when the marked parser throws. Unauthenticated attackers can share text with thousands of nested blockquote markers followed by HTML payloads, executing script that steals the admin token from localStorage."}], "id": "CVE-2026-129170", "lastModified": "2026-11-13T18:17:42.487", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/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", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-11-13T18:17:42.360", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/vastsa/FileCodeBox/issues/557"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/vastsa/FileCodeBoxFronted/blob/bcc1dbda06b772d6f4afbcc12c6f12e60bbbc7da/src/components/common/ContentPreviewModal.vue#L45-L50"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/vastsa/FileCodeBoxFronted/blob/bcc1dbda06b772d6f4afbcc12c6f12e60bbbc7da/src/utils/content-preview.ts#L43-L57"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/vastsa/FileCodeBoxFronted/commit/4c40406d366af1583a3ba2327366b7a62d765537"}, {"source": "disclosure@vulncheck.com", "url": "https://vul.yulun.ac.cn/20261027/filecodebox/"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/filecodebox-2.2.1-through-2.8.4-stored-xss-via-markdown-preview-parser-error"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.2.1,2.8.4]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FileCodeBox", "source": "cna", "vendor": "vastsa"}, "product": "filecodebox", "vendor": "vastsa"}], "created": "2026-11-13T20:45:15.351006+00:00", "updated": "2026-11-13T20:45:15.351020+00:00", "vendors": ["vastsa", "vastsa$PRODUCT$filecodebox"]}