CVE-2026-108266GHSA-j6qv-435v-r492
Privasys rustls fork: RA-TLS challenge mode did not bind attestation evidence to the TLS session
Privasys rustls
CVSS
9.1CriticalExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.12%Chance of exploitation activity in the next 30 days, higher than 1% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
Privasys rustls is a maintained fork of the rustls TLS library that adds RA-TLS challenge and channel-binding support. Prior to privasys-v0.8.1, the fork emitted RA-TLS challenge certificates whose quote ReportData was bound 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 an attacker-terminated connection as the attested enclave. This issue is fixed in privasys-v0.8.1.
Text from CVE List
Affected versions 1
- rustlsaffected: < privasys-v0.8.1CVE List
References 4
- github.com/Privasys/rustls/commit/ab630583b58fee84260cbbfe2f4a8b45d8bde200Fixvia CVE List
- github.com/Privasys/rustls/releases/tag/privasys-v0.8.1Fixvia CVE List
- github.com/Privasys/rustls/security/advisories/GHSA-j6qv-435v-r492Advisoryvia CVE List
- privasys.org/blog/binding-attestation-to-the-tls-sessionReferencevia CVE List