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CVE-2026-5119

high

A flaw was found in libsoup.

Vendor / product: Gnome — libsoup

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.

CVSS
8.2
8.2 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-03-30 07:15
Modified: 2026-11-05 22:18
NVD status: Modified
Last synced 1 hour ago
Verified against the source API 2026-11-05 22:23 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

gnome / libsoup all versions
redhat / enterprise_linux 7.0, 8.0, 9.0, 10.0

Weakness classification (CWE)

CWE-319

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-5119
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2452932
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-5119

References

Data sources

NVD CVE API 2.0 — fetched 2026-11-05 22:23 UTC · record ↗

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Understanding CVEs and CVSS Scores

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