SEPTEMBER 25, 2026
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Case File

CVE-2026-6276

HIGH · CVSS 7.5 EPSS 0.29%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-13 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2026-6276
Severity
HIGH
CVSS
7.5
EPSS
0.29%

Original NVD Description

Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.

Related CVEs

Other vulnerabilities affecting the same vendor(s)