AUGUST 23, 2026
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Case File

CVE-2026-9546

HIGH · CVSS 7.5 EPSS 0.40%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-07-03 · 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-2026-9546
Severity
HIGH
CVSS
7.5
EPSS
0.40%

Original NVD Description

A vulnerability in libcurl caused the HTTP `Referer:` header to persist even when explicitly cleared. While the documentation states that passing NULL to `CURLOPT_REFERER` suppresses the header, the option failed to clear the internal state. As a result the previous referrer string was erroneously reused and sent in subsequent requests, potentially leaking sensitive information to unintended servers.

Related CVEs

Other vulnerabilities affecting the same vendor(s)