Low [CVE-2026-6276] Information disclosure due to cookie leak when reusing connections with custom Host headers
This low-severity Red Hat Linux advisory covers CVE-2026-6276 affecting curl-main, Red Hat Enterprise Linux.
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Summary
Information disclosure due to cookie leak when reusing connections with custom Host headers. Red Hat rates this low (CVSS 3.7).
Weakness: CWE-346. Affected package(s): curl-main.
Resolved in Red Hat advisory RHSA-2026:12916 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux.
- curl-main-8.20.0-0.1.hum1
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:12916
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-2026:12916 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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