CVE-2026-12549

Public on 2026-06-22
Modified on 2026-06-23
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.
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
4.8
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core libsoup Pending Fix
Amazon Linux 2023 libsoup Pending Fix
Amazon Linux 2023 libsoup3 Pending Fix

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L