Platform
rust
Component
dcap-qvl
Fixed in
0.3.10
0.3.9
CVE-2026-22696 is a critical vulnerability affecting the dcap-qvl library, specifically versions prior to 0.3.9. This flaw allows attackers to forge the QE Identity data, effectively bypassing cryptographic verification processes. The impact is severe, as it enables the whitelisting of malicious or non-Intel Quoting Enclaves, potentially leading to quote manipulation and system compromise. A patch is available in version 0.3.9.
The core of this vulnerability lies in the dcap-qvl library's failure to properly verify the QE Identity signature against its certificate chain and enforce policy constraints on the QE Report. This oversight allows an attacker to craft malicious QE Identity data, which the verifier will then accept as valid. This forged identity can be used to sign untrusted quotes, effectively allowing an attacker to impersonate a legitimate Quoting Enclave. The potential consequences are significant, including the ability to bypass security controls, execute unauthorized code, and potentially gain control over systems relying on the dcap-qvl library for quote verification. This vulnerability resembles previous cryptographic bypass attacks where improper validation of certificates or signatures led to severe security breaches.
CVE-2026-22696 was publicly disclosed on 2026-01-26. The EPSS score is currently pending evaluation. There are no known public proof-of-concept exploits available at this time, but the critical severity and the potential for remote exploitation warrant immediate attention. Monitor security advisories and threat intelligence feeds for any indications of active exploitation campaigns.
Exploit Status
EPSS
0.01% (1% percentile)
CISA SSVC
The primary mitigation for CVE-2026-22696 is to immediately upgrade to dcap-qvl version 0.3.9 or later. If upgrading is not immediately feasible due to compatibility issues or system downtime constraints, consider implementing stricter policy controls on the QE Report to limit the impact of potentially forged identities. While not a complete solution, this can provide a temporary layer of defense. Furthermore, review and strengthen the validation logic within your application to ensure that QE Identity data is thoroughly scrutinized before being trusted. After upgrading, confirm the fix by verifying that the QE Identity signature is correctly validated against the certificate chain and that policy constraints are enforced.
Update the dcap-qvl library to version 0.3.9 or higher. If you are using the `@phala/dcap-qvl-node` or `@phala/dcap-qvl-web` packages, switch to the pure JavaScript implementation, `@phala/dcap-qvl`.
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CVE-2026-22696 is a critical vulnerability in the dcap-qvl library that allows attackers to forge QE Identity data, bypassing cryptographic verification and potentially enabling malicious Quoting Enclaves.
You are affected if you are using dcap-qvl versions prior to 0.3.9 and rely on it for quote verification. Assess your deployments immediately.
Upgrade to dcap-qvl version 0.3.9 or later to mitigate the vulnerability. If immediate upgrade is not possible, implement stricter policy controls on the QE Report.
There are currently no known public exploits, but the critical severity warrants immediate attention and monitoring for exploitation attempts.
Refer to the official dcap-qvl project repository and related security advisories for the latest information and updates regarding CVE-2026-22696.
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