{"id":"CVE-2026-86550","title":"NuBrowser lacks protocol whitelist validation for the S.browser_fallback_url field of intent://, allowing attackers to inject javascript: URLs via 302 redirects","summary":"NuBrowser lacks protocol whitelist validation for the S.browser_fallback_url field of intent://, allowing attackers to inject javascript: URLs via 302 redirects. This results in a universal cross‑site scripting (UXSS) vulnerability that …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cwe":["CWE-79"],"vendor":"ZTE","product":"NebulaOS","affected":["NebulaOS Versions prior to Browser V1.6.8"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T15:52:04.827","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86550","references":[{"url":"https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/874505866159006721","label":"psirt@zte.com.cn"}],"tags":["nvd","cve.org"],"epss":0.00461,"epssPercentile":0.3743,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-08T12:23:54.690255Z"},"ingestedAt":"2026-09-08T15:33:26.983Z","slug":"CVE-2026-86550","body":"## Overview\n\nNuBrowser lacks protocol whitelist validation for the S.browser_fallback_url field of intent://, allowing attackers to inject javascript: URLs via 302 redirects. This results in a universal cross‑site scripting (UXSS) vulnerability that enables script execution within the origin of arbitrary websites.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}