Name: CVE-2026-12547: Insertion of Sensitive Information Into Sent Data
Creator: Rapid7
Published: 2026-07-21T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-12547, CWE-201, CVSS 3.4, EPSS 0.00228

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.

CVSS Details

CVSS 3.1 Base Score: 3.4
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon Linux Ami 2	—	Upgrade libsoup-develUpgrade libsoupUpgrade libsoup-debuginfo	Oct 19, 2026	Oct 19, 2026
Amazon_linux_2023	—	Upgrade libsoup3-docUpgrade libsoup3Upgrade libsoup3-develUpgrade libsoup-develUpgrade libsoupUpgrade libsoup3-debugsourceUpgrade libsoup3-debuginfoUpgrade libsoup-debuginfoUpgrade libsoup-debugsourceUpgrade libsoup-doc	Sep 30, 2026	Jul 21, 2026

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CVSS Details

Covered by Rapid7

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