{"schema_version":1,"title":"Zen Browser vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 5 vulnerabilities in Zen Browser: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-45150, was published on 15 July 2026. 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/zen-browser","json_url":"https://junglewise.ai/threats/vendors/zen-browser.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/zen-browser","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":1,"all_time":5,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":2,"last_365_days":5},"latest":[{"cve":"CVE-2026-45150","cvss":6.3,"slug":"cve-2026-45150-zen-browser-ui-misrepresentation-in-fullscreen-mode","title":"Zen Browser UI misrepresentation in fullscreen mode","severity":"info","exploited":false,"published_at":"2026-07-15T16:16:45.657+00:00","url":"https://junglewise.ai/threats/cve-2026-45150-zen-browser-ui-misrepresentation-in-fullscreen-mode"},{"cve":"CVE-2026-57501","cvss":0,"slug":"cve-2026-57501-zen-browser-privilege-escalation-in-glance-and-split-view-context","title":"Zen Browser Privilege Escalation in Glance and Split-View Context Menus","severity":"info","exploited":false,"published_at":"2026-07-09T23:17:05.353+00:00","url":"https://junglewise.ai/threats/cve-2026-57501-zen-browser-privilege-escalation-in-glance-and-split-view-context"},{"cve":"CVE-2026-44659","cvss":4.7,"slug":"cve-2026-44659-zen-browser-address-bar-spoofing-via-long-subdomains","title":"Zen Browser address bar spoofing via long subdomains","severity":"medium","exploited":false,"published_at":"2026-05-11T18:16:38.38+00:00","url":"https://junglewise.ai/threats/cve-2026-44659-zen-browser-address-bar-spoofing-via-long-subdomains"},{"cve":"CVE-2026-44658","cvss":2.4,"slug":"cve-2026-44658-zen-browser-improper-input-validation-in-rss-live-folders","title":"Zen Browser Improper Input Validation in RSS Live-Folders","severity":"low","exploited":false,"published_at":"2026-05-11T18:16:38.243+00:00","url":"https://junglewise.ai/threats/cve-2026-44658-zen-browser-improper-input-validation-in-rss-live-folders"},{"cve":"CVE-2026-41431","cvss":8,"slug":"cve-2026-41431-zen-browser-improper-signature-verification-in-mar-updater","title":"Zen Browser improper signature verification in MAR updater","severity":"high","exploited":false,"published_at":"2026-05-11T18:16:34.28+00:00","url":"https://junglewise.ai/threats/cve-2026-41431-zen-browser-improper-signature-verification-in-mar-updater"}],"vendor":{"hub":true,"name":"Zen Browser","slug":"zen-browser","homepage":"https://zen-browser.app/","description":"Zen Browser is an open-source web browser project focused on privacy and user experience.","url":"https://junglewise.ai/threats/vendors/zen-browser"},"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-41431","cvss":8,"slug":"cve-2026-41431-zen-browser-improper-signature-verification-in-mar-updater","title":"Zen Browser improper signature verification in MAR updater","severity":"high","exploited":false,"published_at":"2026-05-11T18:16:34.28+00:00","url":"https://junglewise.ai/threats/cve-2026-41431-zen-browser-improper-signature-verification-in-mar-updater"},{"cve":"CVE-2026-44659","cvss":4.7,"slug":"cve-2026-44659-zen-browser-address-bar-spoofing-via-long-subdomains","title":"Zen Browser address bar spoofing via long subdomains","severity":"medium","exploited":false,"published_at":"2026-05-11T18:16:38.38+00:00","url":"https://junglewise.ai/threats/cve-2026-44659-zen-browser-address-bar-spoofing-via-long-subdomains"},{"cve":"CVE-2026-44658","cvss":2.4,"slug":"cve-2026-44658-zen-browser-improper-input-validation-in-rss-live-folders","title":"Zen Browser Improper Input Validation in RSS Live-Folders","severity":"low","exploited":false,"published_at":"2026-05-11T18:16:38.243+00:00","url":"https://junglewise.ai/threats/cve-2026-44658-zen-browser-improper-input-validation-in-rss-live-folders"},{"cve":"CVE-2026-45150","cvss":6.3,"slug":"cve-2026-45150-zen-browser-ui-misrepresentation-in-fullscreen-mode","title":"Zen Browser UI misrepresentation in fullscreen mode","severity":"info","exploited":false,"published_at":"2026-07-15T16:16:45.657+00:00","url":"https://junglewise.ai/threats/cve-2026-45150-zen-browser-ui-misrepresentation-in-fullscreen-mode"},{"cve":"CVE-2026-57501","cvss":0,"slug":"cve-2026-57501-zen-browser-privilege-escalation-in-glance-and-split-view-context","title":"Zen Browser Privilege Escalation in Glance and Split-View Context Menus","severity":"info","exploited":false,"published_at":"2026-07-09T23:17:05.353+00:00","url":"https://junglewise.ai/threats/cve-2026-57501-zen-browser-privilege-escalation-in-glance-and-split-view-context"}],"generated_at":"2026-09-26T09:11:00.170868+00:00","technologies":[{"name":"Zen Browser","slug":"zen-browser","vulnerabilities":5,"url":"https://junglewise.ai/threats/technologies/zen-browser"}]}