CVE-2026-12549
Medium
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.
SeverityMedium
CVSS4.8
Exploit probability—
Product
Redhat Enterprise Linux
PublishedJun 22, 2026
First seenJun 22, 2026
Weakness typeCWE-805CWE-805
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat enterprise_linux | 6.0, 7.0, 8.0, 9.0, 10.0 | — |
| gnome libsoup | No range specified | — |
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