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CVE-2021-43999CWE-287

Improper validation of SAML responses

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 1.8%
exploitation probability
1.8%top 23% of all CVEs
observed exploitation
nono source reports it
Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.