---
title: "CVE-2026-108269: Remote Attestation TLS Clients - Authentication Bypass"
description: "Remote Attestation TLS Clients < 0.5.0 contain a replay attack vulnerability caused by quote ReportData not being bound to the active TLS session in Rust and Go RA-TLS challenge verifiers, letting attackers relay genuine quotes to impersonate attested enclaves, exploit requires attacker to obtain enclave TLS private key."
url: https://panop.io/threat-heartbeat/CVE-2026-108269/
---

# CVE-2026-108269 Remote Attestation TLS Clients - Authentication Bypass

Remote Attestation TLS Clients < 0.5.0 contain a replay attack vulnerability caused by quote ReportData not being bound to the active TLS session in Rust and Go RA-TLS challenge verifiers, letting attackers relay genuine quotes to impersonate attested enclaves, 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

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-108269)

## Details

Type

Authentication Bypass

Impact

Man In The Middle

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 0.5.0 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-2026-108269](https://nvd.nist.gov/vuln/detail/CVE-2026-108269)
- [https://github.com/Privasys/ra-tls-clients/releases/tag/v0.5.0](https://github.com/Privasys/ra-tls-clients/releases/tag/v0.5.0)
- [https://github.com/Privasys/ra-tls-clients/security/advisories/GHSA-5qrc-v874-mxvx](https://github.com/Privasys/ra-tls-clients/security/advisories/GHSA-5qrc-v874-mxvx)
- [https://privasys.org/blog/binding-attestation-to-the-tls-session](https://privasys.org/blog/binding-attestation-to-the-tls-session)
- [https://github.com/Privasys/ra-tls-clients/commit/b8de9bcadd0f81ca8882d15095fc0d9c50e40148](https://github.com/Privasys/ra-tls-clients/commit/b8de9bcadd0f81ca8882d15095fc0d9c50e40148)

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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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