CVE-2026-68745

Apache CloudStack: SAML2 Signature Validation Silently Skipped for Cert-less IdP

State: Published
Severity: 8.1 High
Published: Aug 21, 2026
Updated: Aug 24, 2026
Reserved: Jul 31, 2026

Description

Certificate validation failures in SAML authentication in Apache CloudStack 4.20.3.0 and 4.22.1.0 on all platforms allow a malicious agent to forge a SAML response to the management server. The agent will have to spoof the ip address of the IdP or get an url of its own choosing registered in the management server, after which it can allow logging on with forged signatures.

Users are recommended to upgrade to versions 4.20.3.1 or 4.22.1.1 and above, which fix this issue.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-347 Improper Verification of Cryptographic Signature

Affected Products

Product	Versions
Apache CloudStackApache Software Foundation	4.5.2 through 4.20.3.0Affected 4.21.0.0 through 4.22.1.0Affected

References

https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbcvendor-advisory

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