Is CVE-2026-5119 actively exploited?

No active exploitation of CVE-2026-5119 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5119 be exploited remotely?

Yes. CVE-2026-5119 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5119?

CVE-2026-5119 has a CVSS score of 8.2 (HIGH).

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HIGH

CVE-2026-5119

CWE-319Published: March 30, 2026· Updated: Apr 1, 2026

8.2

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:5.2th

Official Description

A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.

NVD Source

Technical Analysis

CVE-2026-5119 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.2.