Medium severity · published Feb 13, 2026
CVE-2026-2443
A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems
5.3
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0; 9.0; 10.0 · source: NVD
LI
Libsoup · Gnome
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2443
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2443
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-2443
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2439671
gitlab.gnome.org
https://gitlab.gnome.org/GNOME/libsoup/-/issues/487
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