CVE-2026-63770 – Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass

CVE ID :CVE-2026-63770

Published : July 20, 2026, 7:17 p.m. | 27 minutes ago

Description :Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to bypass brute-force lockout protections by supplying arbitrary values in the X-Forwarded-For request header when the server proxied option is enabled. Attackers can manipulate the leftmost value of the X-Forwarded-For header to make each login attempt appear to originate from a distinct IP address, preventing the per-IP failed-login counter from reaching the lockout threshold and enabling unlimited credential guessing against the authentication endpoint.

Severity: 8.2 | HIGH

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