CVE-2026-12549
libsoup3: The fix for CVE-2026-2443 was regressed by a subsequent rework commit that replaced specific overflow checks with a g...
CVE-2026-12549 is fixed in 25 products on 1 platform, first by DEBIAN-CVE-2026-12549, released June 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
4.8
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
29th percentile
The fix for CVE-2026-2443 was regressed by a subsequent rework commit that replaced specific overflow checks with a general signed comparison. When a client sends a Range request with a suffix length exceeding the content size, the resulting negative start value is not properly clamped, leading to malformed HTTP 206 responses and log flooding.
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+esm9 | gir1.2-soup-2.4 2.62.1-1ubuntu0.4+esm9 | Aug 25, 2026 |
| gir1.2-soup-2.4 · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm4 | gir1.2-soup-2.4 2.70.0-1ubuntu0.5+esm4 | Aug 25, 2026 |
| gir1.2-soup-2.4 · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.9 | gir1.2-soup-2.4 2.74.2-3ubuntu0.9 | Aug 25, 2026 |
| gir1.2-soup-2.4 · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.9 | gir1.2-soup-2.4 2.74.3-6ubuntu1.9 | Aug 25, 2026 |
| gir1.2-soup-2.4 · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm3 | gir1.2-soup-2.4 2.74.3-10.1ubuntu5+esm3 | Aug 25, 2026 |
| gir1.2-soup-3.0 · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm9 | gir1.2-soup-3.0 3.0.7-0ubuntu1+esm9 | Sep 4, 2026 |
| gir1.2-soup-3.0 · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.9 | gir1.2-soup-3.0 3.4.4-5ubuntu0.9 | Sep 4, 2026 |
| gir1.2-soup-3.0 · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.1 | gir1.2-soup-3.0 3.6.6-1ubuntu0.1 | Sep 4, 2026 |
| libsoup · amzn 2023 | 2.72.0-6.amzn2023.0.15 | ALAS2023-2026-3154 | Nov 7, 2026 |
| libsoup-2.4-1 · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.9 | libsoup-2.4-1 2.74.3-6ubuntu1.9 | Aug 25, 2026 |
| libsoup-2.4-1 · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm3 | libsoup-2.4-1 2.74.3-10.1ubuntu5+esm3 | Aug 25, 2026 |
| libsoup-3.0-0 · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm9 | libsoup-3.0-0 3.0.7-0ubuntu1+esm9 | Sep 4, 2026 |
| libsoup-3.0-0 · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.9 | libsoup-3.0-0 3.4.4-5ubuntu0.9 | Sep 4, 2026 |
| libsoup-3.0-0 · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.1 | libsoup-3.0-0 3.6.6-1ubuntu0.1 | Sep 4, 2026 |
| libsoup-3.0-common · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm9 | libsoup-3.0-common 3.0.7-0ubuntu1+esm9 | Sep 4, 2026 |
| libsoup-3.0-common · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.9 | libsoup-3.0-common 3.4.4-5ubuntu0.9 | Sep 4, 2026 |
| libsoup-3.0-common · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.1 | libsoup-3.0-common 3.6.6-1ubuntu0.1 | Sep 4, 2026 |
| libsoup-3.0-tests · Ubuntu 22.04.1 LTS (jammy) | 3.0.7-0ubuntu1+esm9 | libsoup-3.0-tests 3.0.7-0ubuntu1+esm9 | Sep 4, 2026 |
| libsoup-3.0-tests · Ubuntu 24.04.5 LTS (noble) | 3.4.4-5ubuntu0.9 | libsoup-3.0-tests 3.4.4-5ubuntu0.9 | Sep 4, 2026 |
| libsoup-3.0-tests · Ubuntu 26.04.1 LTS (resolute) | 3.6.6-1ubuntu0.1 | libsoup-3.0-tests 3.6.6-1ubuntu0.1 | Sep 4, 2026 |
| libsoup-debuginfo · amzn 2023 | 2.72.0-6.amzn2023.0.15 | ALAS2023-2026-3154 | Nov 7, 2026 |
| libsoup-debugsource · amzn 2023 | 2.72.0-6.amzn2023.0.15 | ALAS2023-2026-3154 | Nov 7, 2026 |
| libsoup-devel · amzn 2023 | 2.72.0-6.amzn2023.0.15 | ALAS2023-2026-3154 | Nov 7, 2026 |
| libsoup-doc · amzn 2023 | 2.72.0-6.amzn2023.0.15 | ALAS2023-2026-3154 | Nov 7, 2026 |
| libsoup-gnome-2.4-1 · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.9 | libsoup-gnome-2.4-1 2.74.3-6ubuntu1.9 | Aug 25, 2026 |
| libsoup-gnome-2.4-1 · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm3 | libsoup-gnome-2.4-1 2.74.3-10.1ubuntu5+esm3 | Aug 25, 2026 |
| libsoup-gnome2.4-1 · Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm9 | libsoup-gnome2.4-1 2.62.1-1ubuntu0.4+esm9 | Aug 25, 2026 |
| libsoup-gnome2.4-1 · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm4 | libsoup-gnome2.4-1 2.70.0-1ubuntu0.5+esm4 | Aug 25, 2026 |
| libsoup-gnome2.4-1 · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.9 | libsoup-gnome2.4-1 2.74.2-3ubuntu0.9 | Aug 25, 2026 |
| libsoup2.4-1 · Ubuntu 18.04.6 LTS (bionic) | 2.62.1-1ubuntu0.4+esm9 | libsoup2.4-1 2.62.1-1ubuntu0.4+esm9 | Aug 25, 2026 |
| libsoup2.4-1 · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm4 | libsoup2.4-1 2.70.0-1ubuntu0.5+esm4 | Aug 25, 2026 |
| libsoup2.4-1 · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.9 | libsoup2.4-1 2.74.2-3ubuntu0.9 | Aug 25, 2026 |
| libsoup2.4-common · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.9 | libsoup2.4-common 2.74.2-3ubuntu0.9 | Aug 25, 2026 |
| libsoup2.4-common · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.9 | libsoup2.4-common 2.74.3-6ubuntu1.9 | Aug 25, 2026 |
| libsoup2.4-common · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm3 | libsoup2.4-common 2.74.3-10.1ubuntu5+esm3 | Aug 25, 2026 |
| libsoup2.4-tests · Ubuntu 20.04 LTS (focal) | 2.70.0-1ubuntu0.5+esm4 | libsoup2.4-tests 2.70.0-1ubuntu0.5+esm4 | Aug 25, 2026 |
| libsoup2.4-tests · Ubuntu 22.04.1 LTS (jammy) | 2.74.2-3ubuntu0.9 | libsoup2.4-tests 2.74.2-3ubuntu0.9 | Aug 25, 2026 |
| libsoup2.4-tests · Ubuntu 24.04.5 LTS (noble) | 2.74.3-6ubuntu1.9 | libsoup2.4-tests 2.74.3-6ubuntu1.9 | Aug 25, 2026 |
| libsoup2.4-tests · Ubuntu 26.04.1 LTS (resolute) | 2.74.3-10.1ubuntu5+esm3 | libsoup2.4-tests 2.74.3-10.1ubuntu5+esm3 | Aug 25, 2026 |
| libsoup3 · Debian 14 | 3.8.0-1 | DEBIAN-CVE-2026-12549 | Jun 22, 2026 |
| libsoup3 · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| libsoup3 · amzn 2023 | 3.7.2-1.amzn2023 | ALAS2023-2026-3144 | Sep 28, 2026 |
| libsoup3-debuginfo · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| libsoup3-debuginfo · amzn 2023 | 3.7.2-1.amzn2023 | ALAS2023-2026-3144 | Sep 28, 2026 |
| libsoup3-debugsource · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| libsoup3-debugsource · amzn 2023 | 3.7.2-1.amzn2023 | ALAS2023-2026-3144 | Sep 28, 2026 |
| libsoup3-devel · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| libsoup3-devel · amzn 2023 | 3.7.2-1.amzn2023 | ALAS2023-2026-3144 | Sep 28, 2026 |
| libsoup3-doc · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| libsoup3-doc · amzn 2023 | 3.7.2-1.amzn2023 | ALAS2023-2026-3144 | Sep 28, 2026 |
| mingw32-libsoup3 · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| mingw32-libsoup3-debuginfo · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| mingw64-libsoup3 · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
| mingw64-libsoup3-debuginfo · Fedora 43 | 3.6.6-5.fc43 | FEDORA-2026-FCE2F41203 | Sep 5, 2026 |
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