Is CVE-2026-77014 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-77014?

CVE-2026-77014 has a CVSS v3 severity of MEDIUM (5.3).

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CVE-2026-77014

Description

A flaw was found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.