High7.5Red Hat & Ubuntu Linux
Mitigation bypass in the Networking: HTTP component
CVE-2026-4700 Published Mar 24, 2026
CVE-2026-4700
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Mitigation bypass in the Networking: HTTP component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-444. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:6917 — update the affected packages (`sudo dnf update`).
Affected versions
- firefox-0:140.9.0-1.el8_10
- thunderbird-0:140.9.0-1.el8_10
- firefox-0:140.9.0-1.el8_4
- firefox-0:140.9.0-1.el9_2
- firefox-0:140.9.0-1.el8_2
- firefox-0:140.9.0-1.el9_0
- firefox-0:140.9.0-1.el7_9
- firefox-0:140.9.0-1.el8_8
- firefox-0:140.9.0-1.el9_7
- firefox-0:140.9.0-1.el9_6
- firefox-0:140.9.0-1.el8_6
- firefox-0:140.9.0-1.el9_4
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
- RHSA-2026:6917
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:6917 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.