Soupclientmessageiohttp2: libsoup3: libsoup: http/2 goaway frame parsing heap buffer over-read via invalid nul-termination assumption
CVE-2026-15712 is fixed in 10 products on 1 platform, first by FEDORA-2026-FCE2F41203, released September 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.
This update for libsoup fixes the following issues: - CVE-2026-12478: websocket: Fix out-of-bounds read when reading unmasked frame (bsc#1271401). - CVE-2026-12547: Header 'Proxy-Authorization' leads to credentials being send to different proxy after proxy switch (bsc#1272195). - CVE-2026-15711: SoupWebsocketConnection: WebSocket remote denial of service via oversized control frame protocol violation (bsc#1271446). - CVE-2026-15712: SoupClientMessageIOHTTP2: HTTP/2 GOAWAY frame parsing heap buffer over-read via invalid NUL- termination assumption (bsc#1271447). - CVE-2026-15714: SoupMultipartInputStream: libsoup: Out-of-bounds read in soup_multipart_input_stream_read_headers via an oversized multipart boundary string (bsc#1271449). - CVE-2026-66339: proxy credentials leak to destination server via `Proxy-Authorization` header in CONNECT tunnels (bsc#1273156).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libsoup · opensuse-leap 16.0 | 3.6.6-160000.5.1 | OPENSUSE-SU-2026:22181-1 | Nov 7, 2026 |
| libsoup · sles 15.6 | 3.4.4-150600.3.56.1 | SUSE-SU-2026:4558-1 | Oct 7, 2026 |
| libsoup · sles 15.7 | 3.4.4-150600.3.56.1 | SUSE-SU-2026:4558-1 | Oct 7, 2026 |
| libsoup · sles 16.0 | 3.6.6-160000.5.1 | SUSE-SU-2026:24470-1 | Nov 7, 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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