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2 vulnerabilities found for by hyper-mcp-rs

CVE-2026-108699 (GCVE-0-2026-108699)
Vulnerability from cvelistv5
Published
2026-10-11 13:25
Modified
2026-10-13 19:35
Severity ?
8.3 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Summary
hyper-mcp through 0.8.3 contains an improper signature verification vulnerability that allows attackers to load malicious WebAssembly plugins because cosign_verify_args() accepts any signer identity and OIDC issuer by default. Attackers controlling a plugin image reference can sign a malicious image with a free Sigstore keyless certificate to execute plugins with configured host, filesystem, and environment capabilities.
References
Impacted products
Vendor Product Version
hyper-mcp-rs hyper-mcp Version: 0   ≤ 0.8.3
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CVE-2026-108698 (GCVE-0-2026-108698)
Vulnerability from cvelistv5
Published
2026-10-11 13:25
Modified
2026-10-13 16:59
Severity ?
8.3 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
CWE
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
hyper-mcp through 0.8.3 contains a signature verification bypass vulnerability in load_wasm in src/wasm/oci.rs that verifies the Cosign signature of a separately resolved tag rather than the loaded manifest. Attackers controlling registry responses for the tag can serve an unsigned malicious manifest to the loader and a signed one to Cosign, executing unsigned WebAssembly plugins with configured host capabilities.
References
Impacted products
Vendor Product Version
hyper-mcp-rs hyper-mcp Version: 0   ≤ 0.8.3
 Create a notification for this product.
Show details on NVD website

To clipboard 

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