CVE-2026-1801

gir1.2-soup-2.4: A flaw was found in libsoup, an HTTP client/server library

CVE-2026-1801 is fixed in 22 products on 1 platform, first by gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm8, released February 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0042
36th percentile

A flaw was found in libsoup, an HTTP client/server library. This HTTP Request Smuggling vulnerability arises from non-RFC-compliant parsing in the soup_filter_input_stream_read_line() logic, where libsoup accepts malformed chunk headers, such as lone line feed (LF) characters instead of the required carriage return and line feed (CRLF). A remote attacker can exploit this without authentication or user interaction by sending specially crafted chunked requests. This allows libsoup to parse and process multiple HTTP requests from a single network message, potentially leading to information disclosure.

Where it's fixed

ProductFixed inFixReleased
Linux
gir1.2-soup-2.4 · Ubuntu 18.04.6 LTS (bionic) 2.62.1-1ubuntu0.4+esm8 gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm8 Feb 3, 2026
gir1.2-soup-2.4 · Ubuntu 20.04 LTS (focal) 2.70.0-1ubuntu0.5+esm3 gir1.2-soup-2.4 2.70.0-1ubuntu0.5+esm3 Feb 3, 2026
gir1.2-soup-2.4 · Ubuntu 22.04.1 LTS (jammy) 2.74.2-3ubuntu0.8 gir1.2-soup-2.4 2.74.2-3ubuntu0.8 Feb 3, 2026
gir1.2-soup-2.4 · Ubuntu 24.04.5 LTS (noble) 2.74.3-6ubuntu1.8 gir1.2-soup-2.4 2.74.3-6ubuntu1.8 Feb 3, 2026
gir1.2-soup-2.4 · Ubuntu 26.04.1 LTS (resolute) 2.74.3-10.1ubuntu5+esm2 gir1.2-soup-2.4 2.74.3-10.1ubuntu5+esm2 Feb 3, 2026
gir1.2-soup-3.0 · Ubuntu 22.04.1 LTS (jammy) 3.0.7-0ubuntu1+esm8 gir1.2-soup-3.0 3.0.7-0ubuntu1+esm8 Feb 3, 2026
gir1.2-soup-3.0 · Ubuntu 24.04.5 LTS (noble) 3.4.4-5ubuntu0.8 gir1.2-soup-3.0 3.4.4-5ubuntu0.8 Feb 3, 2026
libsoup · amzn 2023 2.72.0-6.amzn2023.0.12 ALAS2023-2026-1758 May 25, 2026
libsoup · sles 15.6 3.4.4-150600.3.47.1 SUSE-SU-2026:2314-1 Jun 9, 2026
libsoup · sles 15.7 3.4.4-150600.3.47.1 SUSE-SU-2026:2314-1 Jun 9, 2026
libsoup-2.4-1 · Ubuntu 24.04.5 LTS (noble) 2.74.3-6ubuntu1.8 libsoup-2.4-1 2.74.3-6ubuntu1.8 Feb 3, 2026
libsoup-2.4-1 · Ubuntu 26.04.1 LTS (resolute) 2.74.3-10.1ubuntu5+esm2 libsoup-2.4-1 2.74.3-10.1ubuntu5+esm2 Feb 3, 2026
libsoup-3.0-0 · Ubuntu 22.04.1 LTS (jammy) 3.0.7-0ubuntu1+esm8 libsoup-3.0-0 3.0.7-0ubuntu1+esm8 Feb 3, 2026
libsoup-3.0-0 · Ubuntu 24.04.5 LTS (noble) 3.4.4-5ubuntu0.8 libsoup-3.0-0 3.4.4-5ubuntu0.8 Feb 3, 2026
libsoup-3.0-common · Ubuntu 22.04.1 LTS (jammy) 3.0.7-0ubuntu1+esm8 libsoup-3.0-common 3.0.7-0ubuntu1+esm8 Feb 3, 2026
libsoup-3.0-common · Ubuntu 24.04.5 LTS (noble) 3.4.4-5ubuntu0.8 libsoup-3.0-common 3.4.4-5ubuntu0.8 Feb 3, 2026
libsoup-3.0-tests · Ubuntu 22.04.1 LTS (jammy) 3.0.7-0ubuntu1+esm8 libsoup-3.0-tests 3.0.7-0ubuntu1+esm8 Feb 3, 2026
libsoup-3.0-tests · Ubuntu 24.04.5 LTS (noble) 3.4.4-5ubuntu0.8 libsoup-3.0-tests 3.4.4-5ubuntu0.8 Feb 3, 2026
libsoup-debuginfo · amzn 2023 2.72.0-6.amzn2023.0.12 ALAS2023-2026-1758 May 25, 2026
libsoup-debugsource · amzn 2023 2.72.0-6.amzn2023.0.12 ALAS2023-2026-1758 May 25, 2026
libsoup-devel · amzn 2023 2.72.0-6.amzn2023.0.12 ALAS2023-2026-1758 May 25, 2026
libsoup-doc · amzn 2023 2.72.0-6.amzn2023.0.12 ALAS2023-2026-1758 May 25, 2026
libsoup-gnome-2.4-1 · Ubuntu 24.04.5 LTS (noble) 2.74.3-6ubuntu1.8 libsoup-gnome-2.4-1 2.74.3-6ubuntu1.8 Feb 3, 2026
libsoup-gnome-2.4-1 · Ubuntu 26.04.1 LTS (resolute) 2.74.3-10.1ubuntu5+esm2 libsoup-gnome-2.4-1 2.74.3-10.1ubuntu5+esm2 Feb 3, 2026
libsoup-gnome2.4-1 · Ubuntu 18.04.6 LTS (bionic) 2.62.1-1ubuntu0.4+esm8 libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm8 Feb 3, 2026
libsoup-gnome2.4-1 · Ubuntu 20.04 LTS (focal) 2.70.0-1ubuntu0.5+esm3 libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm3 Feb 3, 2026
libsoup-gnome2.4-1 · Ubuntu 22.04.1 LTS (jammy) 2.74.2-3ubuntu0.8 libsoup-gnome2.4-1 2.74.2-3ubuntu0.8 Feb 3, 2026
libsoup2 · sles 15.7 2.74.3-150600.4.36.1 SUSE-SU-2026:2654-1 Jun 26, 2026
libsoup2.4-1 · Ubuntu 18.04.6 LTS (bionic) 2.62.1-1ubuntu0.4+esm8 libsoup2.4-1 2.62.1-1ubuntu0.4+esm8 Feb 3, 2026
libsoup2.4-1 · Ubuntu 20.04 LTS (focal) 2.70.0-1ubuntu0.5+esm3 libsoup2.4-1 2.70.0-1ubuntu0.5+esm3 Feb 3, 2026
libsoup2.4-1 · Ubuntu 22.04.1 LTS (jammy) 2.74.2-3ubuntu0.8 libsoup2.4-1 2.74.2-3ubuntu0.8 Feb 3, 2026
libsoup2.4-common · Ubuntu 22.04.1 LTS (jammy) 2.74.2-3ubuntu0.8 libsoup2.4-common 2.74.2-3ubuntu0.8 Feb 3, 2026
libsoup2.4-common · Ubuntu 24.04.5 LTS (noble) 2.74.3-6ubuntu1.8 libsoup2.4-common 2.74.3-6ubuntu1.8 Feb 3, 2026
libsoup2.4-common · Ubuntu 26.04.1 LTS (resolute) 2.74.3-10.1ubuntu5+esm2 libsoup2.4-common 2.74.3-10.1ubuntu5+esm2 Feb 3, 2026
libsoup2.4-tests · Ubuntu 20.04 LTS (focal) 2.70.0-1ubuntu0.5+esm3 libsoup2.4-tests 2.70.0-1ubuntu0.5+esm3 Feb 3, 2026
libsoup2.4-tests · Ubuntu 22.04.1 LTS (jammy) 2.74.2-3ubuntu0.8 libsoup2.4-tests 2.74.2-3ubuntu0.8 Feb 3, 2026
libsoup2.4-tests · Ubuntu 24.04.5 LTS (noble) 2.74.3-6ubuntu1.8 libsoup2.4-tests 2.74.3-6ubuntu1.8 Feb 3, 2026
libsoup2.4-tests · Ubuntu 26.04.1 LTS (resolute) 2.74.3-10.1ubuntu5+esm2 libsoup2.4-tests 2.74.3-10.1ubuntu5+esm2 Feb 3, 2026
libsoup3 · amzn 2023 3.6.6-58.amzn2023 ALAS2023-2026-1778 Jun 8, 2026
libsoup3-debuginfo · amzn 2023 3.6.6-58.amzn2023 ALAS2023-2026-1778 Jun 8, 2026
libsoup3-debugsource · amzn 2023 3.6.6-58.amzn2023 ALAS2023-2026-1778 Jun 8, 2026
libsoup3-devel · amzn 2023 3.6.6-58.amzn2023 ALAS2023-2026-1778 Jun 8, 2026
libsoup3-doc · amzn 2023 3.6.6-58.amzn2023 ALAS2023-2026-1778 Jun 8, 2026

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