Description

A flaw was found in libcurl. This vulnerability allows for information disclosure when a custom `Host:` header is used in an initial HTTP request, and a subsequent request reuses the same connection without specifying a new `Host:` header. This can lead to libcurl incorrectly sending cookies intended for the first host to the second host, resulting in a cookie leak. This issue is categorized as an Origin Validation Error (CWE-346). Exploitation typically requires specific debugging configurations.

INFO

Published Date :

Last Modified :

Source :

AFFECTED PRODUCTS

The following products are affected by CVE-2026-6276 vulnerability.

Vendors Products
Curl
  • Libcurl
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6276.

URL Resource
https://curl.se/docs/CVE-2026-6276.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-6276 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-6276 cve-icon
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CVSS Vulnerability Scoring System

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