{ "threat_severity" : "Important", "public_date" : "2026-03-20T15:08:32Z", "bugzilla" : { "description" : "python: Python: Command-line option injection in webbrowser.open() via crafted URLs", "id" : "2449649", "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2449649" }, "cvss3" : { "cvss3_base_score" : "7.1", "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L", "status" : "verified" }, "cwe" : "CWE-88", "details" : [ "The webbrowser.open() API would accept leading dashes in the URL which \ncould be handled as command line options for certain web browsers. New \nbehavior rejects leading dashes. Users are recommended to sanitize URLs \nprior to passing to webbrowser.open().", "A flaw was found in Python. The `webbrowser.open()` API, used to launch web browsers, does not properly sanitize input. This allows a remote attacker to craft a malicious URL containing leading dashes. When such a URL is opened, certain web browsers may interpret these dashes as command-line options, which could lead to unexpected behavior, information disclosure, or potentially arbitrary code execution, impacting the integrity of the system." ], "affected_release" : [ { "product_name" : "Red Hat Enterprise Linux 10", "release_date" : "2026-03-31T00:00:00Z", "advisory" : "RHSA-2026:6256", "cpe" : "cpe:/o:redhat:enterprise_linux:10.1", "package" : "python3.12-0:3.12.12-3.el10_1.2" }, { "product_name" : "Red Hat Enterprise Linux 10", "release_date" : "2026-05-19T00:00:00Z", "advisory" : "RHSA-2026:19019", "cpe" : "cpe:/o:redhat:enterprise_linux:10.2", "package" : "python3.14-0:3.14.4-2.el10_2" }, { "product_name" : "Red Hat Enterprise Linux 10", "release_date" : "2026-05-19T00:00:00Z", "advisory" : "RHSA-2026:19064", "cpe" : "cpe:/o:redhat:enterprise_linux:10.2", "package" : "python3.12-0:3.12.13-2.el10_2" }, { "product_name" : "Red Hat Enterprise Linux 10.0 Extended Update Support", "release_date" : "2026-04-09T00:00:00Z", "advisory" : "RHSA-2026:7244", "cpe" : "cpe:/o:redhat:enterprise_linux_eus:10.0", "package" : "python3.12-0:3.12.9-2.el10_0.8" }, { "product_name" : "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "release_date" : "2026-04-23T00:00:00Z", "advisory" : "RHSA-2026:10102", "cpe" : "cpe:/o:redhat:rhel_els:6", "package" : "python-0:2.6.6-70.el6_10.3" }, { "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "release_date" : "2026-04-22T00:00:00Z", "advisory" : "RHSA-2026:9614", "cpe" : "cpe:/o:redhat:rhel_els:7", "package" : "python-0:2.7.5-94.el7_9.4" }, { "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "release_date" : "2026-04-22T00:00:00Z", "advisory" : "RHSA-2026:9745", "cpe" : "cpe:/o:redhat:rhel_els:7", "package" : "python3-0:3.6.8-21.el7_9.5" }, { "product_name" : "Red Hat Enterprise Linux 8", "release_date" : "2026-03-31T00:00:00Z", "advisory" : "RHSA-2026:6281", "cpe" : "cpe:/a:redhat:enterprise_linux:8", "package" : "python3.11-0:3.11.13-6.el8_10" }, { "product_name" : "Red Hat Enterprise Linux 8", "release_date" : "2026-03-31T00:00:00Z", "advisory" : "RHSA-2026:6283", "cpe" : "cpe:/a:redhat:enterprise_linux:8", "package" : "python3.12-0:3.12.12-4.el8_10" }, { "product_name" : "Red Hat Enterprise Linux 8", "release_date" : "2026-04-02T00:00:00Z", "advisory" : "RHSA-2026:6473", "cpe" : "cpe:/a:redhat:enterprise_linux:8", "package" : "python3-0:3.6.8-75.el8_10" }, { "product_name" : "Red Hat Enterprise Linux 8", "release_date" : "2026-04-02T00:00:00Z", "advisory" : "RHSA-2026:6473", "cpe" : "cpe:/o:redhat:enterprise_linux:8", "package" : "python3-0:3.6.8-75.el8_10" }, { "product_name" : "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date" : "2026-04-21T00:00:00Z", "advisory" : "RHSA-2026:9387", "cpe" : "cpe:/a:redhat:rhel_aus:8.2", "package" : "python3-0:3.6.8-24.el8_2.7" }, { "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "release_date" : "2026-04-22T00:00:00Z", "advisory" : "RHSA-2026:9621", "cpe" : "cpe:/a:redhat:rhel_aus:8.4", "package" : "python3-0:3.6.8-39.el8_4.10" }, { "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "release_date" : "2026-04-22T00:00:00Z", "advisory" : "RHSA-2026:9621", "cpe" : "cpe:/a:redhat:rhel_eus_long_life:8.4", "package" : "python3-0:3.6.8-39.el8_4.10" }, { "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date" : "2026-04-21T00:00:00Z", "advisory" : "RHSA-2026:9386", "cpe" : "cpe:/a:redhat:rhel_aus:8.6", "package" : "python3-0:3.6.8-47.el8_6.12" }, { "product_name" : "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date" : "2026-04-21T00:00:00Z", "advisory" : "RHSA-2026:9386", "cpe" : "cpe:/a:redhat:rhel_tus:8.6", "package" : "python3-0:3.6.8-47.el8_6.12" }, { "product_name" : "Red Hat Enterprise Linux 8.6 Update Services 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"cpe:/a:redhat:rhui:5::el9", "package" : "rhui5/cds-rhel9:1779798159" }, { "product_name" : "Red Hat Update Infrastructure 5", "release_date" : "2026-05-27T00:00:00Z", "advisory" : "RHSA-2026:21275", "cpe" : "cpe:/a:redhat:rhui:5::el9", "package" : "rhui5/haproxy-rhel9:1779798164" }, { "product_name" : "Red Hat Update Infrastructure 5", "release_date" : "2026-05-27T00:00:00Z", "advisory" : "RHSA-2026:21275", "cpe" : "cpe:/a:redhat:rhui:5::el9", "package" : "rhui5/installer-rhel9:1779798165" }, { "product_name" : "Red Hat Update Infrastructure 5", "release_date" : "2026-05-27T00:00:00Z", "advisory" : "RHSA-2026:21275", "cpe" : "cpe:/a:redhat:rhui:5::el9", "package" : "rhui5/rhua-rhel9:1779798222" } ], "package_state" : [ { "product_name" : "Red Hat Enterprise Linux 8", "fix_state" : "Not affected", "package_name" : "python36:3.6/python36", "cpe" : "cpe:/o:redhat:enterprise_linux:8" }, { "product_name" : "Red Hat Enterprise Linux 8", "fix_state" : "Not affected", "package_name" : "python39-devel:3.9/python39", "cpe" : "cpe:/o:redhat:enterprise_linux:8" } ], "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-4519\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4519\nhttps://github.com/python/cpython/issues/143930\nhttps://github.com/python/cpython/pull/143931\nhttps://mail.python.org/archives/list/security-announce@python.org/thread/AY5NDSS433JK56Q7Q5IS7B37QFZVVOUS/" ], "name" : "CVE-2026-4519", "mitigation" : { "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.", "lang" : "en:us" }, "csaw" : false }