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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 0 LOW 1

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

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

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 1 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 1 No user interaction 1

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Weakness (CWE) CWE-639 Authorization Bypass Through User-Controlled Key 1

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Vendor: x402-foundation × Clear all filters

TI-2026-76932 CVE-2026-113603 · GHSA-vxw2-vmfp-vrg3

Authorization bypass in x402 SIWX lets clients reach unpaid routes

Priority LOW 36

The x402 SIWX server extension in @x402/extensions 2.3.1 through 2.28.0, x402 PyPI 2.11.0 through 2.25.0, and Go module 2.16.0 through 2.28.0 contains an authorization bypass vulnerability that allows paying clients to u…

CVSS 4.0MEDIUM 6.9· Network · No auth · No interaction · EPSS 0.00356 · Published 2026-10-20 · No fix listed CWE-639

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