CVE-2025-6434

{"id": "CVE-2025-6434", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "published": "2025-06-24T13:15:24.447", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1955182", "tags": ["Permissions Required"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-51/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-1021"}]}], "descriptions": [{"lang": "en", "value": "The exception page for the HTTPS-Only feature, displayed when a website is opened via HTTP, lacked an anti-clickjacking delay, potentially allowing an attacker to trick a user into granting an exception and loading a webpage over HTTP. This vulnerability affects Firefox < 140."}, {"lang": "es", "value": "La p\u00e1gina de excepci\u00f3n de la funci\u00f3n Solo HTTPS, que se mostraba al abrir un sitio web mediante HTTP, carec\u00eda de un retardo anti-clickjacking, lo que potencialmente permit\u00eda a un atacante enga\u00f1ar al usuario para que concediera una excepci\u00f3n y cargara una p\u00e1gina web mediante HTTP. Esta vulnerabilidad afecta a Firefox anterior a la versi\u00f3n 140."}], "lastModified": "2025-07-03T16:04:52.800", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "77D2BF2A-26A3-4664-93B5-B41BCF17AC9E", "versionEndExcluding": "140.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@mozilla.org"}