CVE-2026-22696General

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

dcap-qvl implements the quote verification logic for DCAP (Data Center Attestation Primitives). A vulnerability present in versions prior to 0.3.9 involves a critical gap in the cryptographic verification process within the dcap-qvl. The library fetches QE Identity collateral (including qe_identity, qe_identity_signature, and qe_identity_issuer_chain) from the PCCS. However, it skips to verify the QE Identity signature against its certificate chain and does not enforce policy constraints on the QE Report. An attacker can forge the QE Identity data to whitelist a malicious or non-Intel Quoting Enclave. This allows the attacker to forge the QE and sign untrusted quotes that the verifier will accept as valid. Effectively, this bypasses the entire remote attestation security model, as the verifier can no longer trust the entity responsible for signing the quotes. All deployments utilizing the dcap-qvl library for SGX or TDX quote verification are affected. The vulnerability has been patched in dcap-qvl version 0.3.9. The fix implements the missing cryptographic verification for the QE Identity signature and enforces the required checks for MRSIGNER, ISVPRODID, and ISVSVN against the QE Report. Users of the `@phala/dcap-qvl-node` and `@phala/dcap-qvl-web` packages should switch to the pure JavaScript implementation, `@phala/dcap-qvl`. There are no known workarounds for this vulnerability. Users must upgrade to the patched version to ensure that QE Identity collateral is properly verified.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-295CWE-347

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • General: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-02-12: 102-12
Signal classification1 categories
General
1100.0%
Full discourse1 post
  • Rahul Saxena@saxenism
    General

    6/9 The same findings. Multiple public documents. Three different severity classifications. Here is the finding-by-finding record: QE Identity (Finding #4) — Critical. The team maintained this as Critical in the blog post. The GHSA advisory (CVE-2026-22696) publicly classifies this as Critical. TCB Status (Finding #7) — High. The team maintained this as High in the blog post. They explicitly agreed to this classification in the Telegram group after we demonstrated that their initial evaluation was conducted against the post-fix codebase rather than the code as it existed at submission. GPU Attestation (Finding #6) and SSRF (Finding #1) — both reported as High. The team accepted both as High in their own Snapshot bounty proposal, which was filed before the bounty dispute began. The blog post reclassifies both as Low. Event Log (Finding #2) and TLS Verification (Finding #5) — We reported both as High. The team disagreed with our classification, and we settled on Medium through the shared Notion document. The shared Notion document that recorded these Medium classifications is now empty. The system timestamp shows it was last edited after Feb 8. The blog post reclassifies both as Low. On the blog post's framing: + The blog frames mutually agreed-upon security vulnerabilities as a proactive move to a more secure architecture. + The team's blog post states "the responsibility for QE validation [shifts] from the application developer to the dstack infrastructure", implying developers were expected to enforce QE validation at the application layer. + No documentation, no example, no sample implementation in dstack ever told them to. + Intel’s documentation lists QE Identity and TCB evaluation as required elements of the ECDSA verification flow. + This was not a policy decision delegated to applications. It was a missing check that every downstream consumer inherited silently.

    Post summary

    The post outlines disputes over severity classifications for findings related to CVE-2026-22696, noting disagreements between the team and the blog, but does not provide technical, exploit, or patch details.

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