Origin Validation Error Affecting libcurl package, versions [7.76.0,8.20.0)
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-CONAN-LIBCURL-16340569
- published2 May 2026
- disclosed29 Apr 2026
- creditMuhamad Arga Reksapati
Introduced: 29 Apr 2026
NewCVE-2026-6276 (opens in a new tab)How to fix?
Upgrade libcurl to version 8.20.0 or higher.
Overview
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.