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Fencer Intel
high 7.5

CVE-2024-52530 json

GNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are igno…

published 2y ago modified 2mo ago also EUVD-2024-45940 , JLSEC-2026-1277

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

GNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are ignored, i.e., a "Transfer-Encoding\0: chunked" header is treated the same as a "Transfer-Encoding: chunked" header.

Patch / fix

  • gnome libsoup 3.6.0
  • libsoup3 Debian 12 3.2.3-0+deb12u1
  • libsoup3 Debian 13 3.5.2-1
  • libsoup2.4 Debian 12 2.74.3-1+deb12u1
  • libsoup2.4 Debian 13 2.74.3-8.1

debian advisories DEBIAN-CVE-2024-52530

  • libsoup3 Ubuntu 24.04 LTS 3.4.4-5ubuntu0.1
  • libsoup2.4 Ubuntu 20.04 LTS 2.70.0-1ubuntu0.1
  • libsoup2.4 Ubuntu 22.04 LTS 2.74.2-3ubuntu0.1
  • libsoup2.4 Ubuntu 24.04 LTS 2.74.3-6ubuntu1.1
  • libsoup3 Ubuntu Pro 22.04 LTS 3.0.7-0ubuntu1+esm1
  • libsoup2.4 Ubuntu Pro 18.04 LTS 2.62.1-1ubuntu0.4+esm1

ubuntu advisories UBUNTU-CVE-2024-52530

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

  • libsoup RHEL 8 2.62.3-6.el8_10
  • libsoup RHEL 9 2.72.0-8.el9_5.2
  • libsoup RHEL 9.0 E4S 2.72.0-8.el9_0.1
  • libsoup RHEL 9.2 EUS 2.72.0-8.el9_2.1
  • libsoup RHEL 7 ELS 2.62.2-3.el7_9
  • libsoup RHEL 9.4 EUS 2.72.0-8.el9_4.1
  • libsoup RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 2.62.3-2.el8_4.1
  • libsoup RHEL 8.8 EUS 2.62.3-3.el8_8.1

red hat advisories RHSA-2024:9576RHSA-2024:9570RHSA-2024:9654RHSA-2024:9573RHSA-2024:9572RHSA-2024:9566

  • libsoup Linux Micro 6.1 3.4.4-slfo.1.1_2.1
  • libsoup Linux Micro 6.0 3.4.2-5.1
  • libsoup SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +5 more 2.68.4-150200.4.3.1
  • libsoup SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 3.4.4-150600.3.3.1
  • libsoup SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Basesystem 15 SP5 +5 more 3.0.4-150400.3.3.1
  • libsoup2 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Basesystem 15 SP5 +9 more 2.74.2-150400.3.3.1
  • libsoup2 SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.74.3-150600.4.3.1
  • libsoup SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.62.2-5.12.1

suse advisories SUSE-SU-2025:1518-1SUSE-SU-2025:20252-1SUSE-SU-2025:20105-1SUSE-SU-2024:4365-1SUSE-SU-2024:4355-1SUSE-SU-2024:4352-1

  • libsoup2 openSUSE Tumbleweed 2.74.3-4.1

opensuse advisories openSUSE-SU-2024:14489-1

  • libsoup AlmaLinux 9 2.72.0-8.el9_5.2
  • libsoup AlmaLinux 8 2.62.3-6.el8_10

almalinux advisories ALSA-2024:9559ALSA-2024:9573

  • libsoup Rocky Linux 9 2.72.0-8.el9_5.2
  • libsoup Rocky Linux 8 2.62.3-6.el8_10

rocky linux advisories RLSA-2024:9559RLSA-2024:9573

  • libsoup CBL-Mariner 2.0 3.0.4-2
  • libsoup Azure Linux 3.0 3.4.4-2

azure linux advisories AZL-53036AZL-53159

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

Is CVE-2024-52530 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2024-52530 updated cvss 7.5

libsoup: HTTP request smuggling via stripping null bytes from the ends of header names

  • Red Hat Enterprise Linux 6 libsoup
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) libsoup-devel 2.62.3-6.el8_10, libsoup-debuginfo 2.62.3-6.el8_10, libsoup-debugsource 2.62.3-6.el8_10
    fixed: vendor fix RHSA-2024:9573
  • Red Hat Enterprise Linux AppStream (v. 9) libsoup 2.72.0-8.el9_5.2
    fixed: vendor fix RHSA-2024:9559
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) libsoup-devel 2.62.3-1.el8_2.1, libsoup-debuginfo 2.62.3-1.el8_2.1, libsoup-debugsource 2.62.3-1.el8_2.1
    fixed: vendor fix RHSA-2024:9501
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) libsoup-devel 2.62.3-2.el8_4.1, libsoup-debuginfo 2.62.3-2.el8_4.1, libsoup-debugsource 2.62.3-2.el8_4.1
    fixed: vendor fix RHSA-2024:9566
  • Red Hat Enterprise Linux AppStream AUS (v.8.6) libsoup-devel 2.62.3-2.el8_6.1, libsoup-debuginfo 2.62.3-2.el8_6.1, libsoup-debugsource 2.62.3-2.el8_6.1
    fixed: vendor fix RHSA-2024:9525
  • Red Hat Enterprise Linux AppStream E4S (v.8.4) libsoup-devel 2.62.3-2.el8_4.1, libsoup-debuginfo 2.62.3-2.el8_4.1, libsoup-debugsource 2.62.3-2.el8_4.1
    fixed: vendor fix RHSA-2024:9566
  • Red Hat Enterprise Linux AppStream E4S (v.8.6) libsoup-devel 2.62.3-2.el8_6.1, libsoup-debuginfo 2.62.3-2.el8_6.1, libsoup-debugsource 2.62.3-2.el8_6.1
    fixed: vendor fix RHSA-2024:9525
show 17 more
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) libsoup 2.72.0-8.el9_0.1
    fixed: vendor fix RHSA-2024:9576
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) libsoup-devel 2.62.3-3.el8_8.1, libsoup-debuginfo 2.62.3-3.el8_8.1, libsoup-debugsource 2.62.3-3.el8_8.1
    fixed: vendor fix RHSA-2024:9524
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) libsoup 2.72.0-8.el9_2.1
    fixed: vendor fix RHSA-2024:9570
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) libsoup 2.72.0-8.el9_4.1
    fixed: vendor fix RHSA-2024:9572
  • Red Hat Enterprise Linux AppStream TUS (v.8.4) libsoup-devel 2.62.3-2.el8_4.1, libsoup-debuginfo 2.62.3-2.el8_4.1, libsoup-debugsource 2.62.3-2.el8_4.1
    fixed: vendor fix RHSA-2024:9566
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) libsoup-devel 2.62.3-2.el8_6.1, libsoup-debuginfo 2.62.3-2.el8_6.1, libsoup-debugsource 2.62.3-2.el8_6.1
    fixed: vendor fix RHSA-2024:9525
  • Red Hat Enterprise Linux BaseOS (v. 8) libsoup 2.62.3-6.el8_10
    fixed: vendor fix RHSA-2024:9573
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) libsoup 2.62.3-1.el8_2.1
    fixed: vendor fix RHSA-2024:9501
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) libsoup 2.62.3-2.el8_4.1
    fixed: vendor fix RHSA-2024:9566
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) libsoup 2.62.3-2.el8_6.1
    fixed: vendor fix RHSA-2024:9525
  • Red Hat Enterprise Linux BaseOS E4S (v.8.4) libsoup 2.62.3-2.el8_4.1
    fixed: vendor fix RHSA-2024:9566
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6) libsoup 2.62.3-2.el8_6.1
    fixed: vendor fix RHSA-2024:9525
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) libsoup 2.62.3-3.el8_8.1
    fixed: vendor fix RHSA-2024:9524
  • Red Hat Enterprise Linux BaseOS TUS (v.8.4) libsoup 2.62.3-2.el8_4.1
    fixed: vendor fix RHSA-2024:9566
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) libsoup 2.62.3-2.el8_6.1
    fixed: vendor fix RHSA-2024:9525
  • Red Hat Enterprise Linux Server (v. 7 ELS) libsoup 2.62.2-3.el7_9
    fixed: vendor fix RHSA-2024:9654
  • Red Hat Enterprise Linux 10 libsoup3
    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
yes
Technical impact
partial
Assessed
last yr.

Exploit prediction

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • gitlab.gnome.org https://gitlab.gnome.org/GNOME/libsoup/-/issues/377 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

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

Affected packages

ecosystem package affected fixed in
julia Soup3_jll
all versions
 no fix listed

Affected products

  • gnome libsoup

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests

References

Sources

Fencer Intel 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.