What is CVE-2021-38244?

CVE-2021-38244 is a high-severity vulnerability in Cbioportal Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2021-12-16.

How severe is CVE-2021-38244?

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

Resource exhaustion in Cbioportal Project

CVE-2021-38244

A regular expression denial of service (ReDoS) vulnerability exits in cbioportal 3.6.21 and older via a POST request to /ProteinArraySignificanceTest.json.

Published 2021-12-16 · 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:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.6th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Cbioportal Project

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/cBioPortal/cbioportal/issues/8680 (Exploit, Third Party Advisory, Issue Tracking)
github.com/cBioPortal/cbioportal/pull/8751 (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-38244?: CVE-2021-38244 is a high-severity vulnerability in Cbioportal Project, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2021-12-16.
How severe is CVE-2021-38244?: High severity. CVSS v3 base score is 7.5 out of 10.