CVE-2026-2708

A request smuggling vulnerability exists in libsoup's HTTP/1 header parsing logic. The soup_message_headers_append_common() function in libsoup/soup-message-headers.c unconditionally appends each header value without validating for duplicate or conflicting Content-Length fields. This allows an attacker to send HTTP requests containing multiple Content-Length headers with differing values.

CVSS v3 3.7 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-2708	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2440743	Issue Tracking Vendor Advisory
https://gitlab.gnome.org/GNOME/libsoup/-/issues/500	Exploit Issue Tracking Vendor Advisory
https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/513	Issue Tracking

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gnome:libsoup:-:::::::*
	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-04-23 22:16

Updated : 2026-06-17 10:31

NVD link : CVE-2026-2708

Mitre link : CVE-2026-2708

CVE.ORG link : CVE-2026-2708

JSON object : View

Products Affected

redhat

enterprise_linux

gnome

libsoup

CWE

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

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