gir1.2-soup-3.0: A flaw was found in libsoup
CVE-2026-6324 is fixed in 4 products on 1 platform, first by gir1.2-soup-3.0 3.0.7-0ubuntu1+esm9, released September 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in libsoup. A remote attacker could exploit an unsigned to signed conversion error in the `soup_body_input_stream_read_chunked()` function by sending a malicious HTTP request. This vulnerability occurs when libsoup operates behind a non-libsoup proxy server or as a proxy in front of a non-libsoup backend server. Successful exploitation can allow an attacker to bypass security controls, poison web caches, or gain unauthorized access.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| 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-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 |
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