{"id":"CVE-2026-63770","summary":"Glance 0.8.5 IP Spoofing Authentication Brute-Force Protection Bypass","details":"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.","modified":"2026-08-23T03:53:39.384644209Z","published":"2026-07-20T19:02:36.910Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63770.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-348"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63770.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63770"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/glance-ip-spoofing-authentication-brute-force-protection-bypass"},{"type":"REPORT","url":"https://github.com/glanceapp/glance/issues/1031"},{"type":"FIX","url":"https://github.com/glanceapp/glance/commit/3f20e8d9d0b1983892632649f35fd00c7b4ea8b6"},{"type":"FIX","url":"https://github.com/glanceapp/glance/pull/1033"},{"type":"PACKAGE","url":"https://github.com/glanceapp/glance"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/glanceapp/glance","events":[{"introduced":"0"},{"fixed":"91324e8de762702e97b0ac5c8e36271d644d8642"},{"fixed":"3f20e8d9d0b1983892632649f35fd00c7b4ea8b6"}],"database_specific":{"source":["DESCRIPTION","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"0.8.5"}]}}],"versions":["v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.13","v0.7.12","v0.7.11","v0.7.10","v0.7.9","v0.7.8","v0.7.7","v0.7.6","v0.7.5","v0.7.4","v0.7.3","v0.7.2","v0.7.0","v0.7.1","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.1","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63770.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}