Allocation of Resources Without Limits or Throttling in Traefik - #VU145999
Published: August 27, 2026
Vulnerability identifier: #VU145999
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in the HTTP/3 request handling path when processing slow-body uploads. A remote attacker can send a slowly trickled request body to cause a denial of service.
Only deployments with HTTP/3 enabled are vulnerable.
Affected software
Traefik
Remediation
Install security update from vendor's website.
Traefik - addressed in versions 2.11.56, 3.7.12