{"cve":"CVE-2021-22171","nvd":{"published":"2021-01-15T16:15:13.517","modified":"2026-06-17T03:36:44.180","status":"Modified","description":"Insufficient validation of authentication parameters in GitLab Pages for GitLab 11.5+ allows an attacker to steal a victim's API token if they click on a maliciously crafted link","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-287"],"references":["https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22171.json","https://gitlab.com/gitlab-org/gitlab-pages/-/issues/262","https://hackerone.com/reports/718460","https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22171.json","https://gitlab.com/gitlab-org/gitlab-pages/-/issues/262"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-22171","score":0.01348,"percentile":0.71478,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}