DEBIAN-CVE-2026-6733

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2026-6733
Published: 17 Jun 2026, 18:18
Last modified:28 Jun 2026, 05:00

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.7 LOW
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

17 Jun 2026, 18:18
Published
Vulnerability first disclosed
28 Jun 2026, 05:00
Last Modified
Vulnerability information updated

Description

Impact: Undici's HTTP/1.1 client is vulnerable to response queue poisoning on reused keep-alive sockets. An attacker-controlled upstream server can inject an unsolicited HTTP/1.1 response onto an idle socket after a request completes. When the client dispatches the next request on that socket, it associates the injected response with the new request, causing responses to be delivered to the wrong requests. This requires an attacker-controlled or compromised upstream HTTP/1.1 server and keep-alive connection reuse. Patches: Upgrade to undici v6.26.0, v7.28.0 or v8.5.0. Workarounds: Disable keep-alive connection reuse by setting keepAliveTimeout: 0 on the Client or Pool.

CVSS Metrics

  • v3.1•LOW•Score: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Systems

  • debian•node-undici

    all | all | all | < 8.5.0+dfsg+~cs3.2.0-1

References (1)