What is CVE-2026-0960?

CVE-2026-0960 is a medium-severity vulnerability in Wireshark, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 4.7/10. Published 2026-01-14.

How severe is CVE-2026-0960?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Wireshark

CVE-2026-0960

HTTP3 protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.2 allows denial of service

Published 2026-01-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Wireshark
Wireshark Foundation — versions 4.6.0

Weakness classification (CWE)

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

References

www.wireshark.org/security/wnpa-sec-2026-04.html (Vendor Advisory)
gitlab.com/wireshark/wireshark/-/issues/20944 (issue-tracking, Exploit, Patch, permissions-required, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-0960?: CVE-2026-0960 is a medium-severity vulnerability in Wireshark, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 4.7/10. Published 2026-01-14.
How severe is CVE-2026-0960?: Medium severity. CVSS v3 base score is 4.7 out of 10.