CVE-2026-12549

MediumCVSS 4.8/10Last modified Jul 8, 2026

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 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Weakness enumeration

CWE-805

Affected software

No affected versions have been published.

Timeline

Published: Jun 22, 2026
Last modified: Jul 8, 2026
NVD status: Analyzed

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