Infinite loop Affecting libcurl package, versions [8.18.0,8.21.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
1.01% (60th percentile)

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  • Snyk IDSNYK-CONAN-LIBCURL-17808150
  • published3 Jul 2026
  • disclosed3 Jul 2026
  • creditUnknown

Introduced: 3 Jul 2026

NewCVE-2026-11352  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade libcurl to version 8.21.0 or higher.

Overview

Affected versions of this package are vulnerable to Infinite loop in the udp_receive process. An attacker can cause the client to enter a busy-loop and become unresponsive by continuously sending zero-length UDP datagrams from a malicious HTTP/3 server.

CVSS Base Scores

version 4.0
version 3.1