HTTP3 Protocol Vulnerability in Wireshark by The Wireshark Foundation
CVE-2026-0960

4.7MEDIUM

Key Information:

Vendor

Wireshark
Status
Wireshark
Vendor
CVE Published:
14 January 2026

What is CVE-2026-0960?

A denial of service vulnerability exists in the HTTP3 protocol dissector of Wireshark versions 4.6.0 to 4.6.2. This issue could lead to an infinite loop, potentially causing the application to become unresponsive. Users are advised to upgrade to the latest version of Wireshark to mitigate the risk associated with this vulnerability.

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Affected Version(s)

Wireshark 4.6.0 < 4.6.3

References

https://www.wireshark.org/security/wnpa-sec-2026-04.html
https://gitlab.com/wireshark/wireshark/-/issues/20944
issue-trackingpermissions-required

CVSS V3.1

Score:
4.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tom Needham
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