CVE-2026-1539
Libsoup: libsoup: credential leakage via http redirects
5.8CVSSMEDIUM
Description
A flaw was found in the libsoup HTTP library that can cause proxy authentication credentials to be sent to unintended destinations. When handling HTTP redirects, libsoup removes the Authorization header but does not remove the Proxy-Authorization header if the request is redirected to a different host. As a result, sensitive proxy credentials may be leaked to third-party servers. Applications using libsoup for HTTP communication may unintentionally expose proxy authentication data.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:CScopeChanged
Impact
C:LConfidentialityLow
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
and 3 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
References
https://gitlab.gnome.org/GNOME/libsoup/-/issues/489
gitlab.gnome.org
https://access.redhat.com/security/cve/cve-2026-1539
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-1539
access.redhat.com
and 1 more references View all →
Timeline
Published
Jan 28, 2026
Last Updated
Jan 29, 2026
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