HTTP Library Flaw in libsoup Exposes Proxy Authentication Credentials
CVE-2026-1539

5.8MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
28 January 2026

What is CVE-2026-1539?

A vulnerability exists in the libsoup HTTP library that can lead to the exposure of sensitive proxy authentication credentials. When handling HTTP redirects, the library inadequately manages the Authorization and Proxy-Authorization headers, which may result in the unintended disclosure of sensitive data to third-party servers. Therefore, applications leveraging libsoup for HTTP communications could unintentionally leak proxy authentication information when requests are redirected to different hosts.

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References

https://access.redhat.com/security/cve/CVE-2026-1539
vdb-entryx_refsource_REDHAT

CVSS V3.1

Score:
5.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Codean Labs for reporting this issue.
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