{"id":"CVE-2026-63770","title":"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…","summary":"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…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-348"],"published":"2026-07-20","updated":"2026-08-21","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63770","references":[{"url":"https://github.com/glanceapp/glance/commit/3f20e8d9d0b1983892632649f35fd00c7b4ea8b6","label":"disclosure@vulncheck.com"},{"url":"https://github.com/glanceapp/glance/issues/1031","label":"disclosure@vulncheck.com"},{"url":"https://github.com/glanceapp/glance/pull/1033","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/glance-ip-spoofing-authentication-brute-force-protection-bypass","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00295,"epssPercentile":0.19759,"ingestedAt":"2026-08-22T13:32:35.563Z","slug":"CVE-2026-63770","body":"## Overview\n\nGlance 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}