CVE-2026-108267 (GCVE-0-2026-108267)

Vulnerability from cvelistv5 – Published: 2026-10-09 21:11 – Updated: 2026-10-09 21:11
VLAI
Title
Privasys Go fork: RA-TLS challenge mode did not bind attestation evidence to the TLS session
Summary
Privasys Go is a maintained fork of the Go programming language that adds RA-TLS support to crypto/tls. Prior to privasys-v0.5.1-go1.26.5, challenge-mode RA-TLS certificates bound quote ReportData to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept a handshake terminated by the attacker as an attested enclave connection. This issue is fixed in privasys-v0.5.1-go1.26.5.
Severity
9.1 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-346 - Origin Validation Error
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7642 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Privasys go Affected: < privasys-v0.5.1-go1.26.5
guessed Create a notification for this product.
Show details on NVD website
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{
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        {
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          "vendor": "Privasys",
          "versions": [
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        }
      ],
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            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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            "vulnAvailabilityImpact": "NONE",
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          }
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      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-09T21:11:33.186Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Privasys/go/security/advisories/GHSA-7jfw-53rm-phh2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Privasys/go/security/advisories/GHSA-7jfw-53rm-phh2"
        },
        {
          "name": "https://github.com/Privasys/go/commit/00a7d21ba53bba0ea09ac7a67eb2c6714e651700",
          "tags": [
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          ],
          "url": "https://github.com/Privasys/go/commit/00a7d21ba53bba0ea09ac7a67eb2c6714e651700"
        },
        {
          "name": "https://github.com/Privasys/go/releases/tag/privasys-v0.5.1-go1.26.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Privasys/go/releases/tag/privasys-v0.5.1-go1.26.5"
        },
        {
          "name": "https://privasys.org/blog/binding-attestation-to-the-tls-session",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://privasys.org/blog/binding-attestation-to-the-tls-session"
        }
      ],
      "source": {
        "advisory": "GHSA-7jfw-53rm-phh2",
        "discovery": "UNKNOWN"
      },
      "title": "Privasys Go fork: RA-TLS challenge mode did not bind attestation evidence to the TLS session"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-108267",
    "datePublished": "2026-10-09T21:11:33.186Z",
    "dateReserved": "2026-10-09T17:33:15.410Z",
    "dateUpdated": "2026-10-09T21:11:33.186Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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      "date": "2026-10-10",
      "epss": "0.00117",
      "percentile": "0.0156"
    },
    "nvd": {
      "cve": {
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                "product": "go",
                "vendor": "Privasys",
                "versions": [
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                    "version": "\u003c privasys-v0.5.1-go1.26.5"
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            "value": "Privasys Go is a maintained fork of the Go programming language that adds RA-TLS support to crypto/tls. Prior to privasys-v0.5.1-go1.26.5, challenge-mode RA-TLS certificates bound quote ReportData to the certificate public key and client nonce but not to the active TLS session. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing a relying party to accept a handshake terminated by the attacker as an attested enclave connection. This issue is fixed in privasys-v0.5.1-go1.26.5."
          }
        ],
        "id": "CVE-2026-108267",
        "lastModified": "2026-10-09T22:16:59.490",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
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                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
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                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
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                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
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              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
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        "published": "2026-10-09T22:16:59.490",
        "references": [
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            "url": "https://github.com/Privasys/go/commit/00a7d21ba53bba0ea09ac7a67eb2c6714e651700"
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            "url": "https://privasys.org/blog/binding-attestation-to-the-tls-session"
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        "vulnStatus": "Received",
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          }
        ]
      }
    }
  }
}



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