{"id":"CVE-2026-45150","state":"PUBLISHED","title":"Zen Browser - Missing Fullscreen Security Notification Allows Origin Spoofing","description":"Zen is a firefox-based browser. Prior to 1.19.13b, Zen Browser did not provide a persistent, clearly visible security notification when a webpage entered fullscreen mode, allowing an attacker-controlled page to hide the real browser UI and origin information, imitate a trusted website UI, and combine with long-domain URL eliding to spoof a trusted origin for phishing and credential theft. This issue is fixed in version 1.19.13b.","publishedAt":"2026-07-15T15:35:17.010Z","updatedAt":"2026-07-15T17:44:16.341Z","severity":{"score":6.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["zen-browser desktop"],"affected":[{"vendor":"zen-browser","product":"desktop","versions":[{"version":"< 1.19.13b","status":"affected"}]}],"references":["https://github.com/zen-browser/desktop/security/advisories/GHSA-vjfv-85qf-v25c"],"weaknesses":["CWE-451"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45150.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45150","state":"PUBLISHED","datePublished":"2026-07-15T15:35:17.010Z","dateUpdated":"2026-07-15T17:44:16.341Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-08T20:44:38.964Z"},"containers":{"cna":{"title":"Zen Browser - Missing Fullscreen Security Notification Allows Origin Spoofing","descriptions":[{"lang":"en","value":"Zen is a firefox-based browser. Prior to 1.19.13b, Zen Browser did not provide a persistent, clearly visible security notification when a webpage entered fullscreen mode, allowing an attacker-controlled page to hide the real browser UI and origin information, imitate a trusted website UI, and combine with long-domain URL eliding to spoof a trusted origin for phishing and credential theft. This issue is fixed in version 1.19.13b."}],"affected":[{"vendor":"zen-browser","product":"desktop","versions":[{"version":"< 1.19.13b","status":"affected"}]}],"references":[{"url":"https://github.com/zen-browser/desktop/security/advisories/GHSA-vjfv-85qf-v25c","name":"https://github.com/zen-browser/desktop/security/advisories/GHSA-vjfv-85qf-v25c","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-451","lang":"en","description":"CWE-451: User Interface (UI) Misrepresentation of Critical Information","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T15:35:17.010Z"},"source":{"advisory":"GHSA-vjfv-85qf-v25c","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/zen-browser/desktop/security/advisories/GHSA-vjfv-85qf-v25c","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T17:44:09.603889Z","id":"CVE-2026-45150","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T17:44:16.341Z"}}]}}}