CVE-2026-63770

Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass

Published Jul 20, 2026 CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Glance Project
Glance Project glance
CPEs cpe:2.3:a:glance_project:glance:*:*:*:*:*:node.js:*:*
Vendors & Products Glance Project
Glance Project glance
Type Values Removed Values Added
First Time appeared Glanceapp
Glanceapp glance
Vendors & Products Glanceapp
Glanceapp glance
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass
Weaknesses CWE-348
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Aug 21, 2026, 8:32 PM
Reserved
Jul 18, 2026, 12:34 PM
Status
Deferred
Published
Jul 20, 2026, 7:17 PM
Modified
Oct 24, 2026, 8:10 PM