Authentication Bypass by Primary Weakness Affecting curl package, versions [7.7.0,8.21.0)


Severity

Recommended
0.0
critical
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.37% (29th percentile)

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  • Snyk IDSNYK-UNMANAGED-CURL-17808136
  • published3 Jul 2026
  • disclosed3 Jul 2026
  • creditUnknown

Introduced: 3 Jul 2026

NewCVE-2026-8932  (opens in a new tab)
CWE-305  (opens in a new tab)

How to fix?

Upgrade curl to version 8.21.0 or higher.

Overview

curl is a command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP. libcurl offers a myriad of powerful features.

Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness due to incomplete matching of mTLS configuration options during connection reuse in the connection process. An attacker can cause connections to be reused with incorrect client certificate settings by manipulating TLS-related options between transfers.

CVSS Base Scores

version 4.0
version 3.1