SAML Identity Provider Metadata Overwriting in Jenkins Plugin

CVE-2026-84668

What is CVE-2026-84668?

The Jenkins SAML Plugin prior to version 4.619 allows an attacker to overwrite the SAML identity provider metadata file through a flaw in Stapler data binding. This vulnerability enables an attacker to replace the legitimate metadata with malicious content, facilitating unauthorized authentication as any user. It is crucial for organizations using this plugin to be aware of the implications of this vulnerability and to update to a patched version to mitigate risks.

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