CVE-2026-2443CWE-125

Libsoup: out-of-bounds read in libsoup handle_partial_get() leading to heap information disclosure

Medium · published February 13, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
41.1
In the wild
Unconfirmed
What it is

A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems. When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges. In certain build configurations, this could allow a remote attacker to access portions of server memory beyond the intended response. Exploitation requires a vulnerable configuration and access to a server using the embedded SoupServer component.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00488 · 41.1th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-02-13T11:58Z
EPSS history
Timeline
  • 13 FEB 11:58Z
    Libsoup: out-of-bounds read in libsoup handle_partial_get() leading to heap information disclosure
    cvelistv5