Improper Certificate Validation Affecting curl package, versions [8.9.1,8.14.2)[8.15.0,8.16.1)[8.17.0,8.20.1)[8.21.0,8.22.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-CURL-20158565
- published27 Sept 2026
- disclosed6 Sept 2026
- creditUnknown
Introduced: 6 Sep 2026
CVE-2026-82208 (opens in a new tab)How to fix?
Upgrade curl to version 8.14.2, 8.16.1, 8.20.1, 8.22.0 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 Improper Certificate Validation in the CURLOPT_SSL_CTX_FUNCTION callback process when CA caching is enabled with the wolfSSL backend. An attacker can bypass intended trust store restrictions by presenting a certificate that is trusted by the cached store but rejected by the callback-selected store, leading to incorrect acceptance of untrusted certificates.