{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55890", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-17T16:59:42.760Z", "datePublished": "2026-07-10T16:17:14.238Z", "dateUpdated": "2026-07-10T18:39:18.467Z"}, "containers": {"cna": {"title": "Grav: Stored CSS injection via Markdown image ?style=\u2026 reaches MediaObjectTrait::style()", "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "lang": "en", "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54"}, {"name": "https://github.com/getgrav/grav/commit/24fd6cbc438e12310b126d1176e7d7601203a6f2", "tags": ["x_refsource_MISC"], "url": "https://github.com/getgrav/grav/commit/24fd6cbc438e12310b126d1176e7d7601203a6f2"}, {"name": "https://github.com/getgrav/grav/releases/tag/2.0.0-rc.9", "tags": ["x_refsource_MISC"], "url": "https://github.com/getgrav/grav/releases/tag/2.0.0-rc.9"}], "affected": [{"vendor": "getgrav", "product": "grav", "versions": [{"version": "< 2.0.0-rc.9", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-10T16:17:14.238Z"}, "descriptions": [{"lang": "en", "value": "Grav is a file-based Web platform. Prior to 2.0.0-rc.9, Grav's incomplete fix for stored XSS through the Markdown media attribute action (CVE-2026-42841) leaves the sibling MediaObjectTrait::style method reachable through the same Markdown excerpt-action pipeline, allowing an editor to save Markdown image style parameters that are written into the rendered img style attribute without sanitization. This issue is fixed in version 2.0.0-rc.9."}], "source": {"advisory": "GHSA-pmf8-g7c8-7v54", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/getgrav/grav/security/advisories/GHSA-pmf8-g7c8-7v54", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-10T18:39:15.530035Z", "id": "CVE-2026-55890", "options": [{"Exploitation": "poc"}, {"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": "2026-07-10T18:39:18.467Z"}}]}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.0.0-rc.9)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "grav", "source": "cna", "vendor": "getgrav"}, "product": "grav", "vendor": "getgrav"}], "created": "2026-07-10T17:30:17.406158+00:00", "updated": "2026-07-10T17:30:17.406188+00:00", "vendors": ["getgrav", "getgrav$PRODUCT$grav"]}