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Vulnerability · Published Apr 14, 2025 · Assigned by redhat

CVE-2025-32907Libsoup: denial of service in server when client requests a large amount of overlapping ranges with range header

Medium 5.3

In plain English

A medium-severity security flaw in libsoup. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.7%top 46.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC

Official description

A flaw was found in libsoup. The implementation of HTTP range requests is vulnerable to a resource consumption attack. This flaw allows a malicious client to request the same range many times in a single HTTP request, causing the server to use large amounts of memory. This does not allow for a full denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9libsoup2.72.0-10.el9_6.1ALSA-2025:7436
AlmaLinux:9libsoup-devel2.72.0-10.el9_6.1ALSA-2025:7436
AlmaLinux:10libsoup3-doc3.6.5-3.el10_0.6ALSA-2025:8128
AlmaLinux:8mingw32-freetype2.8-3.el8_10.1ALSA-2025:8292
AlmaLinux:8mingw32-freetype-static2.8-3.el8_10.1ALSA-2025:8292
AlmaLinux:8mingw64-freetype2.8-3.el8_10.1ALSA-2025:8292
AlmaLinux:8mingw64-freetype-static2.8-3.el8_10.1ALSA-2025:8292
Debian:12libsoup2.4no fix listedDEBIAN-CVE-2025-32907
Debian:13libsoup2.4no fix listedDEBIAN-CVE-2025-32907
Debian:12libsoup3no fix listedDEBIAN-CVE-2025-32907
Debian:13libsoup33.6.5-2DEBIAN-CVE-2025-32907
Rocky Linux:10libsoup30:3.6.5-3.el10_0.6RLSA-2025:8128
Rocky Linux:8mingw-freetype0:2.8-3.el8_10.1RLSA-2025:8292
Rocky Linux:8spice-client-win0:8.10-1.el8_10RLSA-2025:8292
Ubuntu:22.04:LTSlibsoup2.42.74.2-3ubuntu0.6USN-7643-1
Ubuntu:22.04:LTSlibsoup2.42.74.2-3ubuntu0.6UBUNTU-CVE-2025-32907
Ubuntu:24.04:LTSlibsoup2.42.74.3-6ubuntu1.6USN-7643-1
Ubuntu:24.04:LTSlibsoup2.42.74.3-6ubuntu1.6UBUNTU-CVE-2025-32907
Ubuntu:25.10libsoup2.42.74.3-10.1ubuntu4UBUNTU-CVE-2025-32907
Ubuntu:26.04:LTSlibsoup2.42.74.3-10.1ubuntu4UBUNTU-CVE-2025-32907
Ubuntu:24.04:LTSlibsoup33.4.4-5ubuntu0.5UBUNTU-CVE-2025-32907
Ubuntu:24.04:LTSlibsoup33.4.4-5ubuntu0.5USN-7643-1
Ubuntu:25.10libsoup33.6.5-3UBUNTU-CVE-2025-32907

Affected products (as reported)

VendorProductVersions
libsoup 0 – before 3.6.5
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references

Weakness: CWE-1050 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References