CVE intelligence

CVE-2026-12547

Vulnerability intelligence

Published Jul 21, 2026Sources checked Sep 12, 2026

3.4LOWCVSS out of 10

What this means

Review the available evidence

CVE-2026-12547 and is rated Low severity with a CVSS score of 3.4. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-12547?

SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.