CVE-2026-63770
Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass
- State
- Published
- Severity
- 8.2 High
- Published
- Jul 20, 2026
- Updated
- Aug 21, 2026
- Reserved
- Jul 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.2 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-348 Use of Less Trusted Source
Affected Products
| Product | Versions |
|---|---|
glanceglanceapp |
|
References
- Researcher Disclosuretechnical-descriptionexploitissue-tracking
- Pull Requestissue-trackingpatch
- Patch Commitpatch
- https://www.vulncheck.com/advisories/glance-ip-spoofing-authentication-brute-force-protection-bypassthird-party-advisory
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