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Fencer Vulns
high 7.5

CVE-2025-32049 json

Libsoup: denial of service attack to websocket server

published 2025-04-03 19 mo ago modified 2026-11-05 3 d ago also EUVD-2025-9634

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

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).

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_0.6
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.62.2-9.el7_9
  • Red Hat Red Hat Enterprise Linux 8 0:2.62.3-9.el8_10
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.62.3-1.el8_2.5
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.62.3-2.el8_4.5
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support 0:2.62.3-2.el8_6.5
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service 0:2.62.3-2.el8_6.5
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions 0:2.62.3-2.el8_6.5
  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support 0:2.62.3-3.el8_8.5
  • Red Hat Red Hat Enterprise Linux 9 0:2.72.0-10.el9_6.2
  • Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:2.72.0-8.el9_0.5
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:2.72.0-8.el9_2.5
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.5
  • libsoup RHEL 8 2.62.3-9.el8_10
  • libsoup3 RHEL 10.0 3.6.5-3.el10_0.6
  • libsoup RHEL 9 2.72.0-10.el9_6.2
  • libsoup RHEL 7 ELS 2.62.2-9.el7_9
  • libsoup RHEL 7 ELS 2.62.2-6.el7_9
  • libsoup RHEL 8.4 AUS 2.62.3-2.el8_4.5
  • libsoup RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 2.62.3-2.el8_6.5
  • libsoup RHEL 8.2 AUS 2.62.3-1.el8_2.5

red hat advisories RHSA-2025:21657RHSA-2025:9179RHSA-2025:8663RHSA-2025:8482RHSA-2025:8480RHSA-2025:8481

  • libsoup SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 3.6.6-160000.1.1
  • libsoup2 SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +8 more 2.74.2-150400.3.31.1
  • libsoup Linux Micro 6.1 3.4.4-slfo.1.1_7.1
  • libsoup Linux Micro 6.0 3.4.2-13.1
  • libsoup SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +1 more 3.4.4-150600.3.34.1
  • libsoup SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 3.0.4-150400.3.34.1
  • libsoup SLE Micro 5.2 2.68.4-150200.4.30.1
  • libsoup2 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +1 more 2.74.3-150600.4.27.1

suse advisories SUSE-SU-2026:20752-1SUSE-SU-2026:20902-1SUSE-SU-2026:0834-1SUSE-SU-2026:20649-1SUSE-SU-2026:20529-1SUSE-SU-2026:0703-1

  • libsoup openSUSE Leap 16.0 3.6.6-160000.1.1
  • libsoup2 openSUSE Leap 16.0 2.74.3-160000.4.1
  • libsoup openSUSE Tumbleweed 3.6.5-13.1
  • libsoup2 openSUSE Tumbleweed 2.74.3-16.1

opensuse advisories openSUSE-SU-2026:20384-1openSUSE-SU-2026:20354-1openSUSE-SU-2026:10208-1openSUSE-SU-2026:10209-1

  • libsoup AlmaLinux 9 2.72.0-10.el9_6.2
  • libsoup AlmaLinux 8 2.62.3-9.el8_10

almalinux advisories ALSA-2025:8126ALSA-2025:8132

  • libsoup Rocky Linux 9 2.72.0-10.el9_6.2
  • libsoup3 Rocky Linux 10 3.6.5-3.el10_0.6
  • libsoup Rocky Linux 8 2.62.3-9.el8_10

rocky linux advisories RLSA-2025:8126RLSA-2025:8128RLSA-2025:8132

  • libsoup CBL-Mariner 2.0 3.0.4-12
  • libsoup Azure Linux 3.0 3.4.4-12

azure linux advisories AZL-59539AZL-59557

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-2025-32049 updated cvss 7.5

libsoup: Denial of Service attack to websocket server

  • Red Hat Enterprise Linux 6 libsoup
    affected: workaround, no fix planned “No mitigation is currently available for this vulnerability.”
  • Red Hat Enterprise Linux AppStream (v. 8) libsoup-devel 2.62.3-9.el8_10, libsoup-debuginfo 2.62.3-9.el8_10, libsoup-debugsource 2.62.3-9.el8_10
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8132
  • Red Hat Enterprise Linux AppStream (v. 9) libsoup 2.72.0-10.el9_6.2
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8126
  • Red Hat Enterprise Linux AppStream (v. 10) libsoup3 3.6.5-3.el10_0.6
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8128
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) libsoup-devel 2.62.3-1.el8_2.5, libsoup-debuginfo 2.62.3-1.el8_2.5, libsoup-debugsource 2.62.3-1.el8_2.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8480
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) libsoup-devel 2.62.3-2.el8_4.5, libsoup-debuginfo 2.62.3-2.el8_4.5, libsoup-debugsource 2.62.3-2.el8_4.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8663
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) libsoup-devel 2.62.3-2.el8_6.5, libsoup-debuginfo 2.62.3-2.el8_6.5, libsoup-debugsource 2.62.3-2.el8_6.5 Red Hat Enterprise Linux AppStream E4S (v.8.6) libsoup-devel 2.62.3-2.el8_6.5, libsoup-debuginfo 2.62.3-2.el8_6.5, libsoup-debugsource 2.62.3-2.el8_6.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8482
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) libsoup 2.72.0-8.el9_0.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8481
show 12 more
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) libsoup-devel 2.62.3-3.el8_8.5, libsoup-debuginfo 2.62.3-3.el8_8.5, libsoup-debugsource 2.62.3-3.el8_8.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8252
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) libsoup 2.72.0-8.el9_2.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8140
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) libsoup 2.72.0-8.el9_4.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8139
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) libsoup-devel 2.62.3-2.el8_6.5, libsoup-debuginfo 2.62.3-2.el8_6.5, libsoup-debugsource 2.62.3-2.el8_6.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8482
  • Red Hat Enterprise Linux BaseOS (v. 8) libsoup 2.62.3-9.el8_10
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8132
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) libsoup 2.62.3-1.el8_2.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8480
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) libsoup 2.62.3-2.el8_4.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8663
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) libsoup 2.62.3-2.el8_6.5 Red Hat Enterprise Linux BaseOS E4S (v.8.6) libsoup 2.62.3-2.el8_6.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8482
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) libsoup 2.62.3-3.el8_8.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8252
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) libsoup 2.62.3-2.el8_6.5
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8482
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsoup3-doc 3.6.5-3.el10_0.6
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:8128
  • Red Hat Enterprise Linux Server (v. 7 ELS) libsoup 2.62.2-9.el7_9
    fixed: vendor fix “No mitigation is currently available for this vulnerability.” RHSA-2025:21657

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
yes
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
  • Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  • Red Hat Red Hat Enterprise Linux 8.6 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support
  • 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

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

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.