{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56126", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-06-18T19:15:10.651Z", "datePublished": "2026-09-03T14:19:43.180Z", "dateUpdated": "2026-09-05T01:24:37.042Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-03T14:38:06.457Z"}, "title": "pfSense Plus < 26.07 / CE < 2.9.0 Stored XSS via status_monitoring.php", "descriptions": [{"lang": "en", "value": "pfSense Plus before 26.07 and CE before 2.9.0 allow authenticated users with the Status: Monitoring privilege to inject arbitrary JavaScript via graph configuration parameters in /status_monitoring.php. Multiple POST parameters including graph-left, graph-right, time-period, resolution, start-date, end-date, start-time, end-time, graph-type, invert, and refresh-interval are concatenated and written to the global pfSense XML configuration without sanitization, then echoed unsanitized into a JavaScript string context on page render. Because the setting is stored in the global configuration, the payload executes in the browser of every user who visits the Status: Monitoring page."}], "datePublic": "2026-08-20T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-79", "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "type": "CWE"}]}], "affected": [{"vendor": "Netgate", "product": "pfSense Plus", "collectionURL": "https://github.com/getformwork/formwork", "packageURL": "pkg:github/getformwork/formwork", "repo": "https://github.com/getformwork/formwork", "versions": [{"version": "0", "status": "affected", "versionType": "custom", "lessThan": "26.07"}], "defaultStatus": "unaffected"}, {"defaultStatus": "affected", "vendor": "Netgate", "product": "pfSense CE", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThan": "2.9.0"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 5.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.4, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}}], "references": [{"url": "https://docs.netgate.com/downloads/pfSense-SA-26_09.packages.asc", "tags": ["vendor-advisory", "patch"], "name": "Vendor Advisory"}, {"url": "https://docs.netgate.com/pfsense/en/latest/releases/26-07.html", "tags": ["release-notes"], "name": "Plus Release Notes"}, {"url": "https://docs.netgate.com/pfsense/en/latest/releases/2-9-0.html", "tags": ["release-notes"], "name": "CE Release Notes"}, {"url": "https://www.vulncheck.com/advisories/pfsense-plus-ce-stored-xss-via-status-monitoring-php", "tags": ["third-party-advisory"]}], "credits": [{"lang": "en", "value": "Alex Williams from Pellera Technologies", "type": "finder"}, {"lang": "en", "value": "VulnCheck", "type": "coordinator"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-05T01:24:27.301053Z", "id": "CVE-2026-56126", "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": "2026-09-05T01:24:37.042Z"}}]}}

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