CVE-2026-102556
Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
CVE-2026-102556 is fixed in 20 products on 1 platform, first by RHSA-2026:93583, released September 3, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.6
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0047
40th percentile
The libsoup packages provide an HTTP client and server library for GNOME. Security Fix(es): * libsoup: libsoup: Heap buffer overflow from WebSocket Pong signal type confusion (CVE-2026-102556) * libsoup: libsoup: Heap buffer overflow during WebSocket message reassembly (CVE-2026-102557) * libsoup: libsoup: Heap buffer overflow during WebSocket receive-buffer growth (CVE-2026-102558) * libsoup: libsoup: Heap buffer overflow during WebSocket client-frame masking (CVE-2026-102559) * libsoup: libsoup: Heap buffer overflow during outgoing permessage-deflate buffer growth (CVE-2026-102560) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gir1.2-soup-2.4 · Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm10 | gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm10 | Sep 30, 2026 |
| gir1.2-soup-2.4 · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm5 | gir1.2-soup-2.4 2.70.0-1ubuntu0.5+esm5 | Sep 30, 2026 |
| gir1.2-soup-2.4 · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.10 | gir1.2-soup-2.4 2.74.2-3ubuntu0.10 | Sep 30, 2026 |
| gir1.2-soup-2.4 · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.10 | gir1.2-soup-2.4 2.74.3-6ubuntu1.10 | Sep 30, 2026 |
| gir1.2-soup-2.4 · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm4 | gir1.2-soup-2.4 2.74.3-10.1ubuntu5+esm4 | Sep 30, 2026 |
| gir1.2-soup-3.0 · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm10 | gir1.2-soup-3.0 3.0.7-0ubuntu1+esm10 | Sep 30, 2026 |
| gir1.2-soup-3.0 · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.10 | gir1.2-soup-3.0 3.4.4-5ubuntu0.10 | Sep 30, 2026 |
| gir1.2-soup-3.0 · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.2 | gir1.2-soup-3.0 3.6.6-1ubuntu0.2 | Sep 30, 2026 |
| libsoup · RHEL 8 | 0:2.62.3-19.el8_10 | RHSA-2026:84586 | Oct 19, 2026 |
| libsoup · RHEL 9 | 0:2.72.0-16.el9_8.8 | RHSA-2026:83384 | Oct 16, 2026 |
| libsoup · almalinux 8 | 2.62.3-19.el8_10 | ALSA-2026:84586 | Nov 7, 2026 |
| libsoup · almalinux 9 | 2.72.0-16.el9_8.8 | ALSA-2026:83384 | Nov 7, 2026 |
| libsoup · amzn 2023 | 2.72.0-6.amzn2023.0.16 | ALAS2023-2026-3212 | Nov 7, 2026 |
| libsoup · ol 8 | 0:2.62.3-19.el8_10 | ELSA-2026-84586 | Nov 7, 2026 |
| libsoup · ol 9 | 0:2.72.0-16.el9_8.8 | ELSA-2026-83384 | Nov 7, 2026 |
| libsoup · opensuse-leap 16.0 | 3.6.6-160000.5.1 | OPENSUSE-SU-2026:22181-1 | Nov 7, 2026 |
| libsoup · rocky 8 | 0:2.62.3-19.el8_10 | RLSA-2026:84586 | Nov 7, 2026 |
| libsoup · rocky 9 | 0:2.72.0-16.el9_8.8 | RLSA-2026:83384 | Nov 7, 2026 |
| libsoup · sles 15.6 | 3.4.4-150600.3.59.1 | SUSE-SU-2026:4631-1 | Nov 7, 2026 |
| libsoup · sles 15.7 | 3.4.4-150600.3.59.1 | SUSE-SU-2026:4631-1 | Nov 7, 2026 |
| libsoup · sles 16.0 | 3.6.6-160000.5.1 | SUSE-SU-2026:24470-1 | Nov 7, 2026 |
| libsoup-2.4-1 · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.10 | libsoup-2.4-1 2.74.3-6ubuntu1.10 | Sep 30, 2026 |
| libsoup-2.4-1 · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm4 | libsoup-2.4-1 2.74.3-10.1ubuntu5+esm4 | Sep 30, 2026 |
| libsoup-3.0-0 · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm10 | libsoup-3.0-0 3.0.7-0ubuntu1+esm10 | Sep 30, 2026 |
| libsoup-3.0-0 · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.10 | libsoup-3.0-0 3.4.4-5ubuntu0.10 | Sep 30, 2026 |
| libsoup-3.0-0 · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.2 | libsoup-3.0-0 3.6.6-1ubuntu0.2 | Sep 30, 2026 |
| libsoup-3.0-common · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm10 | libsoup-3.0-common 3.0.7-0ubuntu1+esm10 | Sep 30, 2026 |
| libsoup-3.0-common · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.10 | libsoup-3.0-common 3.4.4-5ubuntu0.10 | Sep 30, 2026 |
| libsoup-3.0-common · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.2 | libsoup-3.0-common 3.6.6-1ubuntu0.2 | Sep 30, 2026 |
| libsoup-3.0-tests · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm10 | libsoup-3.0-tests 3.0.7-0ubuntu1+esm10 | Sep 30, 2026 |
| libsoup-3.0-tests · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.10 | libsoup-3.0-tests 3.4.4-5ubuntu0.10 | Sep 30, 2026 |
| libsoup-3.0-tests · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.2 | libsoup-3.0-tests 3.6.6-1ubuntu0.2 | Sep 30, 2026 |
| libsoup-debuginfo · amzn 2023 | 2.72.0-6.amzn2023.0.16 | ALAS2023-2026-3212 | Nov 7, 2026 |
| libsoup-debugsource · amzn 2023 | 2.72.0-6.amzn2023.0.16 | ALAS2023-2026-3212 | Nov 7, 2026 |
| libsoup-devel · RHEL 8 | 0:2.62.3-19.el8_10 | RHSA-2026:84586 | Oct 19, 2026 |
| libsoup-devel · RHEL 9 | 0:2.72.0-16.el9_8.8 | RHSA-2026:83384 | Oct 16, 2026 |
| libsoup-devel · almalinux 8 | 2.62.3-19.el8_10 | ALSA-2026:84586 | Nov 7, 2026 |
| libsoup-devel · almalinux 9 | 2.72.0-16.el9_8.8 | ALSA-2026:83384 | Nov 7, 2026 |
| libsoup-devel · amzn 2023 | 2.72.0-6.amzn2023.0.16 | ALAS2023-2026-3212 | Nov 7, 2026 |
| libsoup-devel · ol 8 | 0:2.62.3-19.el8_10 | ELSA-2026-84586 | Nov 7, 2026 |
| libsoup-devel · ol 9 | 0:2.72.0-16.el9_8.8 | ELSA-2026-83384 | Nov 7, 2026 |
| libsoup-doc · amzn 2023 | 2.72.0-6.amzn2023.0.16 | ALAS2023-2026-3212 | Nov 7, 2026 |
| libsoup-gnome-2.4-1 · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.10 | libsoup-gnome-2.4-1 2.74.3-6ubuntu1.10 | Sep 30, 2026 |
| libsoup-gnome-2.4-1 · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm4 | libsoup-gnome-2.4-1 2.74.3-10.1ubuntu5+esm4 | Sep 30, 2026 |
| libsoup-gnome2.4-1 · Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm10 | libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm10 | Sep 30, 2026 |
| libsoup-gnome2.4-1 · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm5 | libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm5 | Sep 30, 2026 |
| libsoup-gnome2.4-1 · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.10 | libsoup-gnome2.4-1 2.74.2-3ubuntu0.10 | Sep 30, 2026 |
| libsoup2 · sles 15.6 | 2.74.3-150600.4.42.1 | SUSE-SU-2026:4703-1 | Nov 7, 2026 |
| libsoup2 · sles 15.7 | 2.74.3-150600.4.42.1 | SUSE-SU-2026:4703-1 | Nov 7, 2026 |
| libsoup2.4-1 · Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm10 | libsoup2.4-1 2.62.1-1ubuntu0.4+esm10 | Sep 30, 2026 |
| libsoup2.4-1 · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm5 | libsoup2.4-1 2.70.0-1ubuntu0.5+esm5 | Sep 30, 2026 |
| libsoup2.4-1 · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.10 | libsoup2.4-1 2.74.2-3ubuntu0.10 | Sep 30, 2026 |
| libsoup2.4-common · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.10 | libsoup2.4-common 2.74.2-3ubuntu0.10 | Sep 30, 2026 |
| libsoup2.4-common · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.10 | libsoup2.4-common 2.74.3-6ubuntu1.10 | Sep 30, 2026 |
| libsoup2.4-common · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm4 | libsoup2.4-common 2.74.3-10.1ubuntu5+esm4 | Sep 30, 2026 |
| libsoup2.4-tests · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm5 | libsoup2.4-tests 2.70.0-1ubuntu0.5+esm5 | Sep 30, 2026 |
| libsoup2.4-tests · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.10 | libsoup2.4-tests 2.74.2-3ubuntu0.10 | Sep 30, 2026 |
| libsoup2.4-tests · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.10 | libsoup2.4-tests 2.74.3-6ubuntu1.10 | Sep 30, 2026 |
| libsoup2.4-tests · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm4 | libsoup2.4-tests 2.74.3-10.1ubuntu5+esm4 | Sep 30, 2026 |
| libsoup3 · RHEL 10 | 3.6.5-3.el10_0.19 | RHSA-2026:93583 | Sep 3, 2026 |
| libsoup3 · almalinux 10 | 3.6.5-3.el10_2.20 | ALSA-2026:83618 | Nov 7, 2026 |
| libsoup3 · ol 10 | 0:3.6.5-3.el10_2.20 | ELSA-2026-83618 | Nov 7, 2026 |
| libsoup3-devel · almalinux 10 | 3.6.5-3.el10_2.20 | ALSA-2026:83618 | Nov 7, 2026 |
| libsoup3-devel · ol 10 | 0:3.6.5-3.el10_2.20 | ELSA-2026-83618 | Nov 7, 2026 |
| libsoup3-doc · almalinux 10 | 3.6.5-3.el10_2.20 | ALSA-2026:83618 | Nov 7, 2026 |
| libsoup3-doc · ol 10 | 0:3.6.5-3.el10_2.20 | ELSA-2026-83618 | Nov 7, 2026 |
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