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{"affected_release": [{"advisory": "RHSA-2025:8196", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "thunderbird-0:128.10.1-1.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-05-27T00:00:00Z"}, {"advisory": "RHSA-2025:8756", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "thunderbird-0:128.11.0-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-06-10T00:00:00Z"}, {"advisory": "RHSA-2025:8391", "cpe": "cpe:/a:redhat:rhel_aus:8.2", "package": "thunderbird-0:128.10.1-1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2025-06-02T00:00:00Z"}, {"advisory": "RHSA-2025:8507", "cpe": "cpe:/a:redhat:rhel_aus:8.4", "package": "thunderbird-0:128.10.1-1.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date": "2025-06-04T00:00:00Z"}, {"advisory": "RHSA-2025:8594", "cpe": "cpe:/a:redhat:rhel_aus:8.6", "package": "thunderbird-0:128.10.1-1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2025-06-05T00:00:00Z"}, {"advisory": "RHSA-2025:8594", "cpe": "cpe:/a:redhat:rhel_tus:8.6", "package": "thunderbird-0:128.10.1-1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2025-06-05T00:00:00Z"}, {"advisory": "RHSA-2025:8594", "cpe": "cpe:/a:redhat:rhel_e4s:8.6", "package": "thunderbird-0:128.10.1-1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2025-06-05T00:00:00Z"}, {"advisory": "RHSA-2025:8784", "cpe": "cpe:/a:redhat:rhel_tus:8.8", "package": "thunderbird-0:128.10.1-1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "release_date": "2025-06-10T00:00:00Z"}, {"advisory": "RHSA-2025:8784", "cpe": "cpe:/a:redhat:rhel_e4s:8.8", "package": "thunderbird-0:128.10.1-1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "release_date": "2025-06-10T00:00:00Z"}, {"advisory": "RHSA-2025:8203", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "thunderbird-0:128.10.1-1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-05-27T00:00:00Z"}, {"advisory": "RHSA-2025:8324", "cpe": "cpe:/a:redhat:rhel_e4s:9.0", "package": "thunderbird-0:128.10.1-1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "release_date": "2025-05-29T00:00:00Z"}, {"advisory": "RHSA-2025:8326", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "thunderbird-0:128.10.1-1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2025-05-29T00:00:00Z"}, {"advisory": "RHSA-2025:8325", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "thunderbird-0:128.10.1-1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2025-05-29T00:00:00Z"}], "bugzilla": {"description": "thunderbird: JavaScript Execution via Spoofed PDF Attachment and file:/// Link", "id": "2366283", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2366283"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-290", "details": ["Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested email attachment (message/rfc822) and setting its content type to application/pdf, Thunderbird may incorrectly render it as HTML when opened, allowing the embedded JavaScript to run without requiring a file download. This behavior relies on Thunderbird auto-saving the attachment to /tmp and linking to it via the file:/// protocol, potentially enabling JavaScript execution as part of the HTML. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1.", "The Mozilla Foundation's Security Advisory describes the following issue: Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the file:/// context. By crafting a nested email attachment (message/rfc822) and setting its content type to application/pdf, Thunderbird may incorrectly render it as HTML when opened, allowing the embedded JavaScript to run without requiring a file download. 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