{"id":"BIT-libpython-2026-4786","summary":"Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open()","details":"Mitgation of CVE-2026-4519 was incomplete. If the URL contained \"%action\" the mitigation could be bypassed for certain browser types the \"webbrowser.open()\" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.","aliases":["BIT-python-2026-4786","BIT-python-min-2026-4786","CVE-2026-4786","PSF-0000-CVE-2026-4786","PSF-2026-17"],"modified":"2026-07-07T02:00:04.815462299Z","published":"2026-07-06T15:23:11.370Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10117"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10140"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10141"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10711"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10745"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10774"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10949"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:10950"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:11062"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:11077"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:11768"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:13692"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:13812"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:14652"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:14653"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:14656"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:16699"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:17525"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:17619"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19019"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19064"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19175"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19176"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19177"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19216"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19549"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19570"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19571"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19576"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19589"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19590"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21275"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:21682"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:22144"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:25096"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:26187"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28247"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:28581"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:30078"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:30087"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:30088"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:30089"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8822"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:8824"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:9228"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-4786"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2458049"},{"type":"WEB","url":"https://github.com/python/cpython/commit/28b4ad38067bbdad34edfcd03ad2de5f06387e53"},{"type":"WEB","url":"https://github.com/python/cpython/commit/c5767a72838a8dda9d6dc5d3558075b055c56bca"},{"type":"WEB","url":"https://github.com/python/cpython/commit/d22922c8a7958353689dc4763dd72da2dea03fff"},{"type":"WEB","url":"https://github.com/python/cpython/commit/d6d68494be70bdbda20f89f83801ba52ec37daa4"},{"type":"WEB","url":"https://github.com/python/cpython/commit/f4654824ae0850ac87227fb270f9057477946769"},{"type":"WEB","url":"https://github.com/python/cpython/issues/148169"},{"type":"WEB","url":"https://github.com/python/cpython/pull/148170"},{"type":"WEB","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/JQDUNJVB4AQNTJECSUKOBDU3XCJIPSE5/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4786"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4786.json"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:35838"}],"affected":[{"package":{"name":"libpython","ecosystem":"Bitnami","purl":"pkg:bitnami/libpython"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.13.14"},{"introduced":"3.14.0"},{"fixed":"3.14.5"}]}],"database_specific":{"source":"https://g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