CVE-2026-2708 — LOW (3.7) — White Hats Nepal

Vulnerability Description

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 Score

3.7

LOW

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Gnome	Libsoup	-
Redhat	Enterprise Linux	6.0

Related Weaknesses (CWE)

CWE-444

References

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

FAQ

What is CVE-2026-2708?

CVE-2026-2708 is a vulnerability with a CVSS score of 3.7 (LOW). 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 head...

How severe is CVE-2026-2708?

CVE-2026-2708 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-2708?

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