What is CVE-2026-101021?

CVE-2026-101021 is a high-severity vulnerability in J4care Dcm4chee-Arc-Light, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-10-16.

How severe is CVE-2026-101021?

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

Vulnerability in J4care Dcm4chee-Arc-Light

CVE-2026-101021

MultipartInputStream performs inefficient boundary matching and unnecessary buffer copying. Crafted multipart input can force excessive boundary comparisons and repeated copying.

Published 2026-10-16 · last modified 2026-10-16.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

J4care Dcm4chee-Arc-Light — versions 5.35.1

Weakness classification (CWE)

CWE-407 — Inefficient Algorithmic Complexity

References

Frequently asked questions

What is CVE-2026-101021?: CVE-2026-101021 is a high-severity vulnerability in J4care Dcm4chee-Arc-Light, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2026-10-16.
How severe is CVE-2026-101021?: High severity. CVSS v3 base score is 7.5 out of 10.