{"cve":"CVE-2019-11881","nvd":{"published":"2019-06-10T20:29:01.090","modified":"2026-06-17T02:13:47.970","status":"Modified","description":"A vulnerability exists in Rancher before 2.2.4 in the login component, where the errorMsg parameter can be tampered to display arbitrary content, filtering tags but not special characters or symbols. There's no other limitation of the message, allowing malicious users to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a \"This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading\" message.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N","score":4.7},"cwes":[],"references":["https://github.com/MauroEldritch/VanCleef","https://github.com/rancher/rancher/blob/v2.2.4/pkg/auth/providers/saml/saml_client.go#L282","https://github.com/rancher/rancher/commit/e59adbc7565251919d84d6e353421104be8da06e","https://github.com/rancher/rancher/issues/20216","https://github.com/MauroEldritch/VanCleef"],"products":["suse:rancher"],"source":"nvd","synced_at":"2026-10-19T20:57:00.690689396+00:00"},"epss":{"cve":"CVE-2019-11881","score":0.01969,"percentile":0.80392,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2p4g-jrmx-r34m","url":"https://osv.dev/vulnerability/GHSA-2p4g-jrmx-r34m","summary":"Rancher Login Parameter Can Be Edited","modified":"2024-12-04T16:23:15Z","packages":[{"ecosystem":"Go","name":"github.com/rancher/rancher","purl":"pkg:golang/github.com/rancher/rancher","ranges":["<=2.1.4"],"fixed":[]}]},{"id":"GO-2024-2761","url":"https://osv.dev/vulnerability/GO-2024-2761","summary":"Rancher Login Parameter Can Be Edited in github.com/rancher/rancher","modified":"2026-03-03T04:55:02.818043Z","packages":[{"ecosystem":"Go","name":"github.com/rancher/rancher","purl":"pkg:golang/github.com/rancher/rancher","ranges":["all versions"],"fixed":[]}]}],"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."]}