CVE-2026-25529

{"id": "CVE-2026-25529", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "published": "2026-03-12T17:16:46.953", "references": [{"url": "https://github.com/postalserver/postal/security/advisories/GHSA-5f4r-5jpr-rfhc", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API's \"send/raw\" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher."}, {"lang": "es", "value": "Postal es un servidor SMTP de c\u00f3digo abierto. Las versiones de Postal anteriores a la 3.3.5 ten\u00edan una vulnerabilidad de inyecci\u00f3n HTML que permit\u00eda incluir datos sin escapar en la interfaz de administraci\u00f3n. La forma principal de a\u00f1adir datos sin escapar es a trav\u00e9s del m\u00e9todo 'send/raw' de la API. Esto podr\u00eda permitir la inyecci\u00f3n de HTML arbitrario en la p\u00e1gina, lo que podr\u00eda modificar la p\u00e1gina de forma enga\u00f1osa o permitir la ejecuci\u00f3n de javascript no autorizado. Corregido en la versi\u00f3n 3.3.5 y posteriores."}], "lastModified": "2026-03-19T17:53:51.943", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:postalserver:postal:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A49508C5-16FE-4F8B-81F7-980BD5DFD627", "versionEndExcluding": "3.3.5"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}