CVE-2026-1801

MEDIUM EPSS 29.5%
Published Feb 3, 20264mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Feb 3, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago

Description

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup accepts malformed chunk headers, such as lone line feed (LF) characters instead of the required carriage return and line feed (CRLF). A remote attacker can exploit this without authentication or user interaction by sending specially crafted chunked requests. This allows libsoup to parse and process multiple HTTP requests from a single network message, potentially leading to information disclosure.

CVSS Details

Base Score
6.5
Exploitability
3.9
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
29.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-444

Affected Products 6

VendorProductVersionRange
gnomelibsoup*any
redhatenterprise_linux6.0any
redhatenterprise_linux7.0any
redhatenterprise_linux8.0any
redhatenterprise_linux9.0any
redhatenterprise_linux10.0any

References 3

  • access.redhat.com https://access.redhat.com/security/cve/CVE-2026-1801
    Vendor Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2436315
    Issue TrackingVendor Advisory
  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/libsoup/-/issues/481
    Issue Tracking

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.