What is CVE-2026-2219?

CVE-2026-2219 is a high-severity vulnerability in Debian Dpkg, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-03-07.

How severe is CVE-2026-2219?

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

Vulnerability in Debian Dpkg

CVE-2026-2219

It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the data stream when uncompressing a zstd-compressed .deb archive, which may result in denial of service (infinite loop spinning the CPU).

Published 2026-03-07 · 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: 0.004 (33.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Debian Dpkg — versions 1.21.18

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

git.dpkg.org/cgit/dpkg/dpkg.git/commit/ (Patch, patch)
bugs.debian.org/1129722 (issue-tracking, Mailing List, Issue Tracking)

Frequently asked questions

What is CVE-2026-2219?: CVE-2026-2219 is a high-severity vulnerability in Debian Dpkg, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2026-03-07.
How severe is CVE-2026-2219?: High severity. CVSS v3 base score is 7.5 out of 10.