CVE WatchAug 21, 2026

CVE-2026-63770

Glance through 0.8.5 contains an IP address spoofing vulnerability in the authentication handler that allows unauthenticated attackers to by

CVSS

7.5

High

EPSS

0.3%

p22

KEV

—

Exploit Today

0-100

Published: Jul 20, 2026 · Last modified: Aug 21, 2026 · CWE-348

EPSS · 30d

0.2%EPSS · 30 days0.3%

2026-08-102026-09-07

Technical 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.

Official references

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