PT-2026-23085 · Gnome · Libsoup

Cavid · Published 2026-01-01 · Updated 2026-04-25 · CVE-2026-2708

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions libsoup versions 2.4.1-2.74.3 through 2.4.1-2.74.3-17.1 libsoup versions 3.0.0-3.6.6 through 3.0.0-3.6.6-1.1

Description The libsoup library contains flaws related to HTTP/1 request smuggling. Specifically, the soup headers parse() function improperly handles Content-Length (CL.CL) and Transfer-Encoding (TE+CL) header combinations, allowing for request smuggling primitives to be accepted.

Recommendations Update libsoup to version 2.4.1-2.74.3-17.1 or later. Update libsoup to version 3.0.0-3.6.6-1.1 or later.

Fix

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-444

Related Identifiers

CVE-2026-2708

OPENSUSE-SU-2026:10245-1

OPENSUSE-SU-2026:10246-1

OPENSUSE-SU-2026:20354-1

OPENSUSE-SU-2026:20384-1

SUSE-SU-2026:0657-1

SUSE-SU-2026:0658-1

SUSE-SU-2026:0689-1

SUSE-SU-2026:0690-1

SUSE-SU-2026:0703-1

SUSE-SU-2026:0834-1

SUSE-SU-2026:20529-1

SUSE-SU-2026:20649-1

SUSE-SU-2026:20752-1

SUSE-SU-2026:20902-1

Affected Products

Libsoup

References · 63

• https://osv.dev/vulnerability/SUSE-SU-2026:0658-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-2708 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20902-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:20649-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0689-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0703-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-2708 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2440743 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-2708 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20384-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0657-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0690-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-2708 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-2708 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:20354-1 · Vendor Advisory