CVE-2026-1539
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
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3Description
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.
Analysis
libsoup's HTTP redirect handling fails to strip Proxy-Authorization headers when requests are forwarded to different hosts, allowing proxy credentials to be exposed to unintended third-party servers. Applications relying on libsoup for HTTP communication are vulnerable to disclosure of sensitive proxy authentication data. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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