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CVE-2026-111171

6.3 medium SSVC exploitation: poc Deferred
NVD · CVE.org

Web3.py 7.15.0 through 7.16.0 and 8.0.0b2 through 8.0.0 contains a server-side request forgery vulnerability because _check_ip_blocked() does not unwrap IPv4-mapped IPv6 addresses in CCIP Read URL validation. Malicious contracts can return OffchainLookup URLs with IPv4-mapped IPv6 hosts or AAAA records, making clients with CCIP Read enabled send requests to loopback, private, or link-local services.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 3

  1. StatusReceived → DeferredNVD modified 2026-10-16 18:25
  2. References+1 references (now 6)NVD modified 2026-10-15 20:17
  3. First seenCVSS 6.3NVD modified 2026-10-15 19:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 6