CVE-2026-21433

{"id": "CVE-2026-21433", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-21433", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-05T20:30:21.079318Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "emlog", "product": "emlog", "versions": [{"status": "affected", "version": "<= 2.5.19"}]}]}], "published": "2026-01-02T19:15:48.187", "references": [{"url": "https://github.com/emlog/emlog/security/advisories/GHSA-6rwr-c8hc-mjj4", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "Emlog is an open source website building system. Versions up to and including 2.5.19 are vulnerable to server-side Out-of-Band (OOB) requests / SSRF via uploaded SVG files. An attacker can upload a crafted SVG to http[:]//emblog/admin/media[.]php which contains external resource references. When the server processes/renders the SVG (thumbnailing, preview, or sanitization), it issues an HTTP request to the attacker-controlled host. Impact: server-side SSRF/OOB leading to internal network probing and potential metadata/credential exposure. As of time of publication, no known patched versions are available."}, {"lang": "es", "value": "Emlog es un sistema de construcci\u00f3n de sitios web de c\u00f3digo abierto. Las versiones hasta la 2.5.19 inclusive son vulnerables a solicitudes fuera de banda (OOB) del lado del servidor / SSRF a trav\u00e9s de archivos SVG subidos. Un atacante puede subir un SVG manipulado a http[:]//emblog/admin/media[.]php que contiene referencias a recursos externos. Cuando el servidor procesa/renderiza el SVG (generaci\u00f3n de miniaturas, vista previa o sanitizaci\u00f3n), emite una solicitud HTTP al host controlado por el atacante. Impacto: SSRF/OOB del lado del servidor que conduce a sondeo de red interna y posible exposici\u00f3n de metadatos/credenciales. En el momento de la publicaci\u00f3n, no hay versiones parcheadas conocidas disponibles."}], "lastModified": "2026-06-17T10:18:39.777", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*", "vulnerable": true, "matchCriteriaId": "72E4E5DE-A4A2-4326-B8EE-71690D75F7AE", "versionEndIncluding": "2.5.19"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}