Libsoup WebSocket DoS via Large Message Vulnerability
CVE-2025-32049 Published on April 3, 2025

Libsoup: denial of service attack to websocket server
A flaw was found in libsoup. The SoupWebsocketConnection may accept a large WebSocket message, which may cause libsoup to allocate memory and lead to a denial of service (DoS).

Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-32049 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Timeline

Reported to Red Hat.

Made public.

Weakness Type

Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.


Products Associated with CVE-2025-32049

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2025-32049 are published in these products:

GNOME Libsoup
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Rhel Els
 
Red Hat Rhel Aus
 
Red Hat Rhel E4s
 
Red Hat Rhel Tus
 
Red Hat Rhel Eus
 

Exploit Probability

EPSS
1.20%
Percentile
78.63%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.