Information Exposure Affecting libcurl package, versions [7.76.0,8.5.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.43% (62nd percentile)

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  • Snyk IDSNYK-CONAN-LIBCURL-10076472
  • published8 May 2025
  • disclosed6 Dec 2023
  • creditHarry Sintonen

Introduced: 6 Dec 2023

CVE-2023-46218  (opens in a new tab)
CWE-201  (opens in a new tab)

How to fix?

Upgrade libcurl to version 8.5.0 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure in the function that verifies a given cookie domain against the Public Suffix List. This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible.

CVSS Base Scores

version 3.1