CVE-2026-86550

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 enables script execution within the origin of arbitrary websites.

Affected Software

VendorProductVersion RangeStatus
ZTENebulaOSVersions prior to Browser V1.6.8affected

Weaknesses

  • CWE-79: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References