Description
The fix for CVE-2026-2443 was regressed by a subsequent rework commit that replaced specific overflow checks with a general signed comparison. When a client sends a Range request with a suffix length exceeding the content size, the resulting negative start value is not properly clamped, leading to malformed HTTP 206 responses and log flooding.
Metrics
CVSS 3.1 4.8/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:LWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
References
- https://access.redhat.com/security/cve/CVE-2026-12549Mitigation, Vendor Advisory
- https://access.redhat.com/security/cve/cve-2026-0716Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2489999Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/516Exploit, Issue Tracking, Patch, Vendor Advisory
Timeline
- Published
- Jun 22, 2026
- Last modified
- Nov 5, 2026
- NVD status
- Analyzed