CVE-2026-12549

CVE-2026-12549CVE-2026-12549

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.

Scoring

CVSS 4.8 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Last modified2026-06-23
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.