CVE-2026-12549 — Libsoup: incomplete fix for cve-2026-2443: range suffix overflow in libsoup soupserver
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 reques…
Published: 2026-06-22 · CVSS: 4.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7