{"cve":"CVE-2010-3091","nvd":{"published":"2010-09-29T17:00:04.650","modified":"2026-06-16T23:22:06.657","status":"Modified","description":"The OpenID module in Drupal 6.x before 6.18, and the OpenID module 5.x before 5.x-1.4 for Drupal, violates the OpenID 2.0 protocol by not verifying the openid.return_to value, which allows remote attackers to bypass authentication by leveraging an assertion from an OpenID provider.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-287"],"references":["http://drupal.org/node/880476","http://drupal.org/node/880480","http://marc.info/?l=oss-security&m=128418560705305&w=2","http://marc.info/?l=oss-security&m=128440896914512&w=2","http://www.debian.org/security/2010/dsa-2113"],"products":["drupal:drupal","peter_wolanin:openid"],"source":"nvd","synced_at":"2026-10-19T19:56:26.512081652+00:00"},"epss":{"cve":"CVE-2010-3091","score":0.02372,"percentile":0.83845,"date":"2026-10-31"},"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."]}