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Signals Exploited in the wild (KEV) 0 Patch available 1 No fix listed 0 Has CVE 1

Fix status Fixed 1 Partial 0 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 1 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 0 SQL injection 0

Attack vector Network 0 Adjacent network 0 Local 1 Physical 0

Requirements No authentication 1 No user interaction 0

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Weakness (CWE) CWE-287 Improper Authentication 1

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Vendor: XianYuLauncher × Clear all filters

TI-2026-36247 CVE-2026-48991

XianYuLauncher: Legacy Microsoft account OAuth sign-in flow lacks PKCE and state validation

Priority LOW 24

XianYuLauncher is a Minecraft Java Edition launcher.

CVSS 3.1MEDIUM 5.5· Local · No auth · User interaction · EPSS 0.00127 · Published 2026-06-17 · Fixed in 1.5.5 CWE-287

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