---
title: "CVE-2026-108267: Privasys Go - Authentication Bypass"
description: "Privasys Go prior to v0.5.1-go1.26.5 contains a replay attack vulnerability caused by challenge-mode RA-TLS certificates not binding the quote ReportData to the active TLS session, letting attackers relay genuine quotes to impersonate attested enclave connections, exploit requires attacker to obtain enclave TLS private key."
url: https://panop.io/threat-heartbeat/CVE-2026-108267/
---

# CVE-2026-108267 Privasys Go - Authentication Bypass

Privasys Go prior to v0.5.1-go1.26.5 contains a replay attack vulnerability caused by challenge-mode RA-TLS certificates not binding the quote ReportData to the active TLS session, letting attackers relay genuine quotes to impersonate attested enclave connections, exploit requires attacker to obtain enclave TLS private key.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

EPSS

0.12% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-108267)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

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

Published

9 October 2026

Updated

15 October 2026

Weakness

[CWE-346](https://cwe.mitre.org/data/definitions/346.html)

## Vendor fix

Update to version v0.5.1-go1.26.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-108267](https://nvd.nist.gov/vuln/detail/CVE-2026-108267)
- [https://github.com/Privasys/go/commit/00a7d21ba53bba0ea09ac7a67eb2c6714e651700](https://github.com/Privasys/go/commit/00a7d21ba53bba0ea09ac7a67eb2c6714e651700)
- [https://github.com/Privasys/go/releases/tag/privasys-v0.5.1-go1.26.5](https://github.com/Privasys/go/releases/tag/privasys-v0.5.1-go1.26.5)
- [https://github.com/Privasys/go/security/advisories/GHSA-7jfw-53rm-phh2](https://github.com/Privasys/go/security/advisories/GHSA-7jfw-53rm-phh2)
- [https://privasys.org/blog/binding-attestation-to-the-tls-session](https://privasys.org/blog/binding-attestation-to-the-tls-session)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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