CVE-2019-11881

Name: CVE-2019-11881
Creator: NVD / NIST
Published: 2019-06-10T20:29:01.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.26%

Last modified Jun 17, 2026

CVE-2019-11881 is a vulnerability of currently unknown severity. 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to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.. EPSS estimates a 2.26% chance of exploitation in the next 30 days.

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to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a "This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.

Metrics

EPSS Probability

2.26%

80.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Suse	Rancher	2.1.4

References

https://github.com/MauroEldritch/VanCleefThird Party Advisory
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/20216Exploit, Issue Tracking, Third Party Advisory
https://github.com/MauroEldritch/VanCleefThird Party Advisory
https://github.com/rancher/rancher/issues/20216Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jun 10, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11881?

How severe is CVE-2019-11881?

Severity scoring for CVE-2019-11881 is pending analysis. The EPSS model estimates a 2.26% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11881?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11881?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST