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Fencer Vulns
medium 5.3

CVE-2025-32907 json

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

published 2025-04-14 18 mo ago modified 2026-11-05 3 d ago also EUVD-2025-10900

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_0.6
  • Red Hat Red Hat Enterprise Linux 8 0:2.8-3.el8_10.1, 0:8.10-1
  • Red Hat Red Hat Enterprise Linux 9 0:2.72.0-10.el9_6.1
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.72.0-8.el9_0.4
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:2.72.0-8.el9_2.4
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.4
  • libsoup3 Debian 13 3.6.5-2

debian advisories DEBIAN-CVE-2025-32907

  • libsoup3 Ubuntu 24.04 LTS 3.4.4-5ubuntu0.5
  • libsoup3 Ubuntu 25.10 3.6.5-3
  • libsoup2.4 Ubuntu 22.04 LTS 2.74.2-3ubuntu0.6
  • libsoup2.4 Ubuntu 24.04 LTS 2.74.3-6ubuntu1.6
  • libsoup2.4 Ubuntu 26.04 LTS, Ubuntu 25.10 2.74.3-10.1ubuntu4
  • libsoup3 Ubuntu Pro 22.04 LTS 3.0.7-0ubuntu1+esm5
  • libsoup2.4 Ubuntu Pro 16.04 LTS 2.52.2-1ubuntu0.3+esm5
  • libsoup2.4 Ubuntu Pro 18.04 LTS 2.62.1-1ubuntu0.4+esm6

ubuntu advisories UBUNTU-CVE-2025-32907

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mingw-freetype RHEL 8 2.8-3.el8_10.1
  • spice-client-win RHEL 8 8.10-1.el8_10
  • mingw32-freetype RHEL 8 2.8-3.el8_10.1
  • mingw64-freetype RHEL 8 2.8-3.el8_10.1
  • spice-client-win-x64 RHEL 8 8.10-1.el8_10
  • spice-client-win-x86 RHEL 8 8.10-1.el8_10
  • libsoup3 RHEL 10.0 3.6.5-3.el10_0.6
  • libsoup RHEL 9 2.72.0-10.el9_6.1

red hat advisories RHSA-2025:8292RHSA-2025:8128RHSA-2025:7436RHSA-2025:4508RHSA-2025:4440RHSA-2025:4439

  • libsoup Linux Micro 6.1 3.4.4-slfo.1.1_3.1
  • libsoup SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 3.4.4-150600.3.7.1
  • libsoup2 SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.74.3-150600.4.6.1
  • libsoup Linux Micro 6.0 3.4.2-6.1
  • libsoup SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +2 more 2.68.4-150200.4.6.1
  • libsoup SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +7 more 3.0.4-150400.3.7.1
  • libsoup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +10 more 2.74.2-150400.3.6.1
  • libsoup SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.62.2-5.12.1

suse advisories SUSE-SU-2025:20446-1SUSE-SU-2025:01504-1SUSE-SU-2025:01503-1SUSE-SU-2025:20375-1SUSE-SU-2025:1519-1SUSE-SU-2025:1518-1

  • libsoup openSUSE Tumbleweed 3.6.5-3.1
  • libsoup2 openSUSE Tumbleweed 2.74.3-9.1

opensuse advisories openSUSE-SU-2025:15043-1openSUSE-SU-2025:15044-1

  • mingw32-freetype AlmaLinux 8 2.8-3.el8_10.1
  • mingw64-freetype AlmaLinux 8 2.8-3.el8_10.1
  • libsoup AlmaLinux 9 2.72.0-10.el9_6.1

almalinux advisories ALSA-2025:8292ALSA-2025:7436

  • libsoup3 Rocky Linux 10 3.6.5-3.el10_0.6
  • mingw-freetype Rocky Linux 8 2.8-3.el8_10.1
  • spice-client-win Rocky Linux 8 8.10-1.el8_10

rocky linux advisories RLSA-2025:8128RLSA-2025:8292

  • libsoup Azure Linux 3.0 3.4.4-7
  • libsoup CBL-Mariner 2.0 3.0.4-7

azure linux advisories AZL-60426AZL-60429

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-32907 updated cvss 5.3

libsoup: Denial of service in server when client requests a large amount of overlapping ranges with Range header

  • Red Hat Enterprise Linux 6 libsoup Red Hat Enterprise Linux 7 libsoup
    affected: workaround, no fix planned “Currently, no mitigation was found for this vulnerability.”
  • Red Hat Enterprise Linux AppStream (v. 8) spice-client-win 8.10-1.el8_10, spice-client-win-x64 8.10-1.el8_10, spice-client-win-x86 8.10-1.el8_10
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:8292
  • Red Hat Enterprise Linux AppStream (v. 9) libsoup 2.72.0-10.el9_6.1
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:7436
  • Red Hat Enterprise Linux AppStream (v. 10) libsoup3 3.6.5-3.el10_0.6
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:8128
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) libsoup 2.72.0-8.el9_0.4
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:4439
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) libsoup 2.72.0-8.el9_2.4
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:4508
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) libsoup 2.72.0-8.el9_4.4
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:4440
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsoup3-doc 3.6.5-3.el10_0.6
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:8128
show 2 more
  • Red Hat Enterprise Linux CRB (v. 8) mingw-freetype 2.8-3.el8_10.1, mingw32-freetype 2.8-3.el8_10.1, mingw64-freetype 2.8-3.el8_10.1
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:8292
  • Red Hat Enterprise Linux 8 libsoup
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7

Classification

Weakness
  • CWE-1050 Excessive Platform Resource Consumption within a Loop

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.