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CVE-2026-108267— Privasys Go fork: RA-TLS challenge mode did not bind attestation evidence to the TLS session

Quick assessment

Affected
Privasys go
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Privasys Go 是 Go 编程语言的一个持续维护分支，它为 crypto/tls 模块增加了 RA-TLS（Remote Attestation TLS）支持。在版本 privasys-v0.5.1-go1.26.5 之前，challenge-mode 下的 RA-TLS 证书将远程证明（quote）中的 ReportData 绑定到证书的公钥和客户端随机数（nonce），但未绑定到当前的 TLS 会话。攻击者若获取了 enclave（可信执行环境）的 TLS 私钥，便可将一份真实的远程证明（quote）中

CVSS 9.1 · Critical

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2026-108267

Vulnerability Information
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Vulnerability Title
Privasys Go fork: RA-TLS challenge mode did not bind attestation evidence to the TLS session
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
源验证错误
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Privasys go < privasys-v0.5.1-go1.26.5 -

II. Public POCs for CVE-2026-108267

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III. Intelligence Information for CVE-2026-108267

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Vendor Advisories for CVE-2026-108267 (1)

Security Blog Posts for CVE-2026-108267 (1)

Vendor Pages for CVE-2026-108267 (1)

Same Patch Batch · Privasys · 2026-10-09 · 5 CVEs total

CVE-2026-108265 9.1 CRITICAL enclave-os-mini: RA-TLS challenge certificates were not bound to the TLS session
CVE-2026-108266 9.1 CRITICAL Privasys rustls fork: RA-TLS challenge mode did not bind attestation evidence to the TLS s
CVE-2026-108269 9.1 CRITICAL ra-tls-clients: RA-TLS challenge verifier accepted quotes not bound to the TLS session
CVE-2026-108268 9.1 CRITICAL enclave-os-virtual: RA-TLS challenge certificates were not bound to the TLS session

IV. Related Vulnerabilities

Same product: go
Same vendor: Privasys
Same weakness: CWE-346

V. Comments for CVE-2026-108267

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