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CVE-2026-5119

5.9
MEDIUMCVSS v3.1 Base Score
0.01%
LOW RiskEPSS (3rd percentile)

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.

Published: 3/30/2026
Modified: 6/3/2026
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Vulnerability Summary

CVSS v3 Score

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N

EPSS Score (Exploitation Probability)

0.01%LOW Exploitation Risk
3rd percentile

This vulnerability has a 0.01% probability of being exploited in the next 30 days, ranking higher than 3% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-319)

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