Origin Validation Error Affecting curl package, versions [7.7.1.0,8.20.0)
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-16340568
- published2 May 2026
- disclosed29 Apr 2026
- creditMuhamad Arga Reksapati
Introduced: 29 Apr 2026
CVE-2026-6276 (opens in a new tab)How to fix?
Upgrade curl to version 8.20.0 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 Origin Validation Error via the reuse of an easy handle in HTTP requests when a custom Host: header is set for the initial request and omitted in a subsequent one. An attacker can obtain cookies intended for a different host by exploiting this behavior.