{"id":"CVE-2026-4519","summary":"webbrowser.open() allows leading dashes in URLs","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().","aliases":["PSF-2026-14"],"modified":"2026-07-16T03:31:04.811596022Z","published":"2026-03-20T15:08:32.576Z","related":["ALSA-2026:19019","ALSA-2026:19064","ALSA-2026:19175","ALSA-2026:19176","ALSA-2026:19177","ALSA-2026:19216","ALSA-2026:6256","ALSA-2026:6281","ALSA-2026:6283","ALSA-2026:6285","ALSA-2026:6286","ALSA-2026:6473","ALSA-2026:6766","CGA-mwjj-543v-2qxw","SUSE-SU-2026:1206-1","SUSE-SU-2026:1292-1","SUSE-SU-2026:1296-1","SUSE-SU-2026:1345-1","SUSE-SU-2026:1349-1","SUSE-SU-2026:1354-1","SUSE-SU-2026:1376-1","SUSE-SU-2026:1385-1","SUSE-SU-2026:1417-1","SUSE-SU-2026:1530-1","SUSE-SU-2026:1715-1","SUSE-SU-2026:21104-1","SUSE-SU-2026:21178-1","SUSE-SU-2026:21254-1","openSUSE-SU-2026:10469-1","openSUSE-SU-2026:10477-1","openSUSE-SU-2026:10478-1","openSUSE-SU-2026:10479-1","openSUSE-SU-2026:10480-1","openSUSE-SU-2026:10481-1","openSUSE-SU-2026:20517-1"],"database_specific":{"cna_assigner":"PSF","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4519.json"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/03/20/1"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4519.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10065"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10101"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10102"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10111"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10140"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10141"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:13812"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16008"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16009"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16030"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16174"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19019"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19064"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19175"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19176"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19177"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19216"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19724"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19725"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21275"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25096"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6016"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6035"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6256"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6281"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6283"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6285"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6286"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6473"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6766"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7010"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7244"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7329"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7335"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7443"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:7661"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8746"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8747"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:8748"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9042"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9260"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9261"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9262"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9289"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9354"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9386"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9387"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9591"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:9614"},{"type":"ADVISORY","url"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