CVE-2026-108269 ra-tls-clients: RA-TLS challenge verifier accepted quotes not bound to the TLS session
Attackers can bypass remote attestation by relaying valid quotes to different TLS sessions, allowing them to impersonate attested enclaves.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108269?
CVE-2026-108269 is a critical vulnerability in Privasys ra-tls-clients, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Remote Attestation TLS Clients provides multi-language utilities for verifying attested TLS connections. Prior to 0.5.0, the Rust and Go RA-TLS challenge verifiers accepted quote ReportData that was bound to the certificate public key and client nonce but not to the active TLS session before permitting application traffic. An attacker who obtained an enclave TLS private key could relay a genuine quote onto another connection, causing the clients to accept an attacker-terminated connection as the attested enclave. This issue is fixed in 0.5.0.
Weakness: CWE-346
Which versions are affected by CVE-2026-108269?
How do I fix CVE-2026-108269?
No fix has been published for CVE-2026-108269 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-108269 being exploited?
There is no known exploitation of CVE-2026-108269 in the wild and no public exploit code.
Sources
Also known as GHSA-5qrc-v874-mxvx.