{"cve":"CVE-2021-39881","nvd":{"published":"2021-10-05T14:15:07.883","modified":"2026-06-17T04:04:21.247","status":"Modified","description":"In all versions of GitLab CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","score":3.5},"cwes":[],"references":["https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json","https://gitlab.com/gitlab-org/gitlab/-/issues/26695","https://hackerone.com/reports/494530","https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json","https://gitlab.com/gitlab-org/gitlab/-/issues/26695"],"products":["gitlab:gitlab"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-39881","score":0.00875,"percentile":0.58984,"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."]}