CVE-2026-2443
When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges.
Does this matter?
Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- gnome/libsoup · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2026-2443Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2439671Issue Tracking, Vendor Advisory
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/487
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.