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Fencer Vulns
high 7.5

CVE-2025-32908 json

Libsoup: denial of service on libsoup through http/2 server

published 2025-04-14 18 mo ago modified 2026-11-04 4 d ago also EUVD-2025-10901

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

A flaw was found in libsoup. The HTTP/2 server in libsoup may not fully validate the values of pseudo-headers :scheme, :authority, and :path, which may allow a user to cause a denial of service (DoS).

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:3.6.5-3.el10_0
  • libsoup3 Debian 13 3.6.5-2

debian advisories DEBIAN-CVE-2025-32908

  • libsoup3 Ubuntu 24.04 LTS 3.4.4-5ubuntu0.4

ubuntu advisories UBUNTU-CVE-2025-32908

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

  • libsoup3 RHEL 10.0 3.6.5-3.el10_0

red hat advisories RHSA-2025:7505

  • 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
  • libsoup Linux Micro 6.0 3.4.2-6.1

suse advisories SUSE-SU-2025:20446-1SUSE-SU-2025:01504-1SUSE-SU-2025:20375-1SUSE-SU-2025:1504-1

  • libsoup openSUSE Tumbleweed 3.6.5-2.1

opensuse advisories openSUSE-SU-2025:15015-1

  • libsoup3 AlmaLinux 10 3.6.5-3.el10_0

almalinux advisories ALSA-2025:7505

  • libsoup Azure Linux 3.0 3.4.4-4

azure linux advisories AZL-60396

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-2025-32908 updated cvss 7.5

libsoup: Denial of service on libsoup through HTTP/2 server

  • Red Hat Enterprise Linux 6 libsoup
    affected: workaround, no fix planned “Currently, no mitigation was found for this vulnerability.”
  • Red Hat Enterprise Linux AppStream (v. 10) libsoup3 3.6.5-3.el10_0 Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libsoup3-doc 3.6.5-3.el10_0
    fixed: vendor fix “Currently, no mitigation was found for this vulnerability.” RHSA-2025:7505
  • Red Hat Enterprise Linux 7 libsoup Red Hat Enterprise Linux 8 libsoup Red Hat Enterprise Linux 9 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

0.62% chance of exploitation in the next 30 days, higher than 49% 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 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-115 Misinterpretation of Input

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.