CVE-2026-12547

low

Description

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.

References

https://gitlab.gnome.org/GNOME/libsoup/-/work_items/506

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-46361

https://bugzilla.redhat.com/show_bug.cgi?id=2489994

https://access.redhat.com/security/cve/CVE-2026-12547

Details

Source: Mitre, NVD

Published: 2026-07-21

Updated: 2026-07-21

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 3.4

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

Severity: Low

EPSS

EPSS: 0.00228