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CVE

CVE-2026-100835

Contrast before 1.16.0 Remote Attestation Relay Attack
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CVE

CVE-2026-100835

Contrast before 1.16.0 Remote Attestation Relay Attack

Contrast before 1.16.0 is susceptible to remote attestation relay attacks. Contrast accepted any TEE attestation report that verified correctly and contained the expected firmware patch levels and software measurements, regardless of which machine produced it, so attestation was not bound to specific, physically trusted hardware. An attacker who can both intercept network traffic between the CLI and the Coordinator (or between the Coordinator and an attested component) and forge reports or extract secrets from any single TEE machine under their physical control can relay such a report to impersonate a Contrast Coordinator or a Contrast workload, defeating identity verification in Contrast's attested TLS (aTLS).

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
4.0
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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100835.json, https://github.com/edgelesssys/contrast/security/advisories/GHSA-hjgc-jc5v-fw7h, https://nvd.nist.gov/vuln/detail/CVE-2026-100835, https://www.vulncheck.com/advisories/contrast-before-1.16.0-remote-attestation-relay-attack

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00274%
EPSS Percentile
0.1963%
Introduced Version
0
Fix Available
32d01511ce638dc6db1de8b1f3829945f2671c40

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