CVE-2026-2443 — MEDIUM (5.3)

Vulnerability 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 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Gnome	Libsoup	-
Redhat	Enterprise Linux	6.0

Related Weaknesses (CWE)

CWE-125

References

https://access.redhat.com/security/cve/CVE-2026-2443Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2439671Issue TrackingVendor Advisory
https://gitlab.gnome.org/GNOME/libsoup/-/issues/487

FAQ

What is CVE-2026-2443?

CVE-2026-2443 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...

How severe is CVE-2026-2443?

CVE-2026-2443 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-2443?

Check the references section above for vendor advisories and patch information. Affected products include: Gnome Libsoup, Redhat Enterprise Linux.