SB20260425209 - Allocation of Resources Without Limits or Throttling in quic-go

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Main Vulnerability Database SB20260425209

SB20260425209 - Allocation of Resources Without Limits or Throttling in quic-go

Published: April 25, 2026

Security Bulletin ID SB20260425209
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2025-64702)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

CVSSv4: 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/E:U/U:Green


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 QPACK header decoding and header construction logic when processing a QPACK-encoded HEADERS frame that expands into a large decoded header field section. A remote attacker can send a specially crafted HEADERS frame to cause a denial of service.

The issue affects both HTTP/3 client and server implementations due to symmetric header construction.


Remediation

Install update from vendor's website.

References