Medium [CVE-2026-5119] Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment
This medium-severity Red Hat Linux advisory covers CVE-2026-5119 affecting Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 9.
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Summary
Information disclosure via cleartext transmission of cookies during HTTPS tunnel establishment. Red Hat rates this moderate (CVSS 5.9).
Weakness: CWE-319. Affected package(s): libsoup, libsoup3.
Resolved in Red Hat advisory RHSA-2026:13978 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7.
- libsoup-0:2.62.3-2.el8_4.9
- libsoup3-0:3.6.5-3.el10_1.11
- libsoup3-0:3.6.5-3.el10_2.11
- libsoup-0:2.72.0-12.el9_7.6
- libsoup-0:2.72.0-8.el9_4.10
- libsoup-0:2.72.0-8.el9_2.11
- libsoup-0:2.62.3-14.el8_10
- libsoup-0:2.62.3-3.el8_8.9
- libsoup-0:2.72.0-10.el9_6.7
- libsoup-0:2.72.0-8.el9_0.10
- libsoup-0:2.72.0-16.el9_8.1
- libsoup-0:2.62.2-12.el7_9
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:13978
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:13978 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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