What is CVE-2020-11872?

CVE-2020-11872 is a high-severity vulnerability in Bluetrace Opentrace, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2020-04-17.

How severe is CVE-2020-11872?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Bluetrace Opentrace

CVE-2020-11872

The Cloud Functions subsystem in OpenTrace 1.0 might allow fabrication attacks by making billions of TempID requests before an AES-256-GCM key rotation occurs.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2020-04-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Bluetrace Opentrace — versions 1.0

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

github.com/opentrace-community/opentrace-cloud-functions/issues/7 (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-11872?: CVE-2020-11872 is a high-severity vulnerability in Bluetrace Opentrace, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2020-04-17.
How severe is CVE-2020-11872?: High severity. CVSS v3 base score is 7.5 out of 10.