Critical severity · published Oct 9, 2026
CVE-2026-108269
ra-tls-clients: RA-TLS challenge verifier accepted quotes not bound to the TLS session
9.1
CVSS
0.1%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
ra-tls-clients · Privasys
< 0.5.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-108269
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-108269
x_refsource_CONFIRM
https://github.com/Privasys/ra-tls-clients/security/advisories/GHSA-5qrc-v874-mxvx
x_refsource_MISC
https://github.com/Privasys/ra-tls-clients/commit/b8de9bcadd0f81ca8882d15095fc0d9c50e40148
x_refsource_MISC
https://github.com/Privasys/ra-tls-clients/releases/tag/v0.5.0
x_refsource_MISC
https://privasys.org/blog/binding-attestation-to-the-tls-session
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