CVE-2026-113866

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{"bugzilla": {"description": "thunderbird: thunderbird: Information disclosure via unencrypted AutoDiscover lookup", "id": "2556401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556401"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-523", "details": ["A flaw was found in Thunderbird. An information disclosure issue occurs during account setup when the Exchange AutoDiscover feature transmits requests over unencrypted Hypertext Transfer Protocol (HTTP). A network attacker monitoring traffic can intercept these plaintext requests, exposing the user's entered credentials and leading to unauthorized account access."], "name": "CVE-2026-113866", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "thunderbird", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-10-20T19:14:54Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-113866\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-113866\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=2080121\nhttps://www.mozilla.org/security/advisories/mfsa2026-114/"], "threat_severity": "Moderate"}

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