Authentication Bypass by Primary Weakness Affecting libcurl package, versions [,8.0.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-CONAN-LIBCURL-10076461
  • published8 May 2025
  • disclosed20 Mar 2023
  • creditUnknown

Introduced: 20 Mar 2023

CVE-2023-27538  (opens in a new tab)
CWE-305  (opens in a new tab)

How to fix?

Upgrade libcurl to version 8.0.0 or higher.

Overview

Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness when it keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, two SSH settings were left out from the configuration match checks, making them match too easily.

CVSS Base Scores

version 3.1