Vulnerability in Glanceapp Glance
CVE-2026-63770
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.
EPSS: 0.003 (21.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Glanceapp Glance — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking, technical-description, exploit)
- disclosure@vulncheck.com (issue-tracking, patch)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (patch)
Frequently asked questions
- What is CVE-2026-63770?
- CVE-2026-63770 is a high-severity vulnerability in Glanceapp Glance, classified under CWE-348. CVSS score: 7.5/10. Published 2026-07-20.
- How severe is CVE-2026-63770?
- High severity. CVSS v3 base score is 7.5 out of 10.