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libsoup2.4

libsoup3

A vulnerability in libsoup2.4 causes the Proxy-Authorization header to be incorrectly attached to HTTPS requests after a CONNECT tunnel is established through an HTTP proxy. This flaw allows the destination server to capture proxy credentials, leading to information disclosure. The issue affects multiple specific versions of libsoup2.4 prior to fixed releases. The vulnerability has a CVSS 3.1 score of 6.5 (medium severity). A patch is available to address this issue.

CVE-2026-66339 is a vulnerability in libsoup2.4 where, after establishing a CONNECT tunnel through an HTTP proxy, the Proxy-Authorization header is incorrectly forwarded to the destination HTTPS server. This behavior exposes proxy credentials to the destination server, resulting in information disclosure. The vulnerability affects numerous specific versions of libsoup2.4 as listed, and has been assigned a CVSS 3.1 score of 6.5, indicating a medium severity impact. A patch is available to remediate this issue.

Detailed information about A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Auth

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization… (CVE-2026-66339) - Live Threat Intelligence - Threat Radar | OffSeq.com

Libsoup2.4: A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization… (CVE-2026-66339)

A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials, leading to information disclosure.

CVE-2026-66339 describes a flaw in libsoup where, after a CONNECT tunnel is established through an HTTP proxy, the Proxy-Authorization header is erroneously attached to subsequent HTTPS requests sent through the tunnel to the destination server. This results in the destination server receiving proxy credentials, leading to sensitive information disclosure. The vulnerability affects Red Hat Enterprise Linux 10. No explicit affected versions or patch information are provided in the advisory.

Detailed information about CVE-2026-66339: Insertion of Sensitive Information Into Sent Data in Red Hat Red Hat Enterprise Linux 10 affecting Red Hat Red Hat En

CVE-2026-66339: Insertion of Sensitive Information Into Sent Data in Red Hat Red Hat Enterprise Linux 10 - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-66339: Insertion of Sensitive Information Into Sent Data in Red Hat Red Hat Enterprise Linux 10


Libsoup2.4: A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization… (CVE-2026-66339)CVE-2026-66339 0 A vulnerability in libsoup2.4 causes the Proxy-Authorization header to be incorrectly attached to HTTPS requests after a CONNECT tunnel is established through an HTTP proxy. This flaw allows the destination server to capture proxy credentials, leading to information disclosure. The issue affects multiple specific versions of libsoup2.4 prior to fixed releases. The vulnerability has a CVSS 3.1 score of 6.5 (medium severity). A patch is available to address this issue. MediumVulnerability#gcve #osv #ghsa-vh9q-f797-xwg7 Join the discussion	GCVE Database	07/24/2026, 23:16:00 UTC Added: 07/25/2026, 23:09:09 UTC
CVE-2026-66339: Insertion of Sensitive Information Into Sent Data in Red Hat Red Hat Enterprise Linux 10CVE-2026-66339 0 A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials, leading to information disclosure. MediumVulnerability#cve #cve-2026-66339 Join the discussion	CVE Database V5	07/24/2026, 23:01:15 UTC Added: 07/24/2026, 23:22:46 UTC

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