# CVE-2026-15713: Libsoup: soupcache: libsoup: http/2 frame window exhaustion remote denial of service via memory leak CVE-2026-15713 is fixed in 11 products on 1 platform, first by FEDORA-2026-FCE2F41203, released September 5, 2026. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2026-15713 - Priority: Routine - CVSS: 5.9 (Moderate) - EPSS: 0.0035 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 17, 2026 - Weakness: Missing Release of Resource after Effective Lifetime - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-15713 ## Description This update for libsoup fixes the following issues: - CVE-2026-15713: SoupCache: libsoup: HTTP/2 frame window exhaustion remote denial of service via memory leak (bsc#1271448). - CVE-2026-102555: Heap buffer overflow via uninitialized length in data-URI base64 decoding (bsc#1283299). - CVE-2026-102556: Heap buffer overflow from WebSocket Pong signal type confusion (bsc#1283300). - CVE-2026-102557: Heap buffer overflow during WebSocket message reassembly (bsc#1283301). - CVE-2026-102558: Heap buffer overflow during WebSocket receive-buffer growth (bsc#1283302). - CVE-2026-102559: Heap buffer overflow during WebSocket client-frame masking (bsc#1283303). - CVE-2026-102560: Heap buffer overflow during outgoing permessage-deflate buffer growth (bsc#1283304). ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libsoup opensuse-leap 16.0 | 3.6.6-160000.5.1 | [OPENSUSE-SU-2026:22181-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22181-1.md) | Nov 7, 2026 | | Linux | libsoup sles 15.6 | 3.4.4-150600.3.59.1 | [SUSE-SU-2026:4631-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4631-1.md) | Nov 7, 2026 | | Linux | libsoup sles 15.7 | 3.4.4-150600.3.59.1 | [SUSE-SU-2026:4631-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4631-1.md) | Nov 7, 2026 | | Linux | libsoup sles 16.0 | 3.6.6-160000.5.1 | [SUSE-SU-2026:24470-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24470-1.md) | Nov 7, 2026 | | Linux | libsoup2 sles 15.6 | 2.74.3-150600.4.42.1 | [SUSE-SU-2026:4703-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4703-1.md) | Nov 7, 2026 | | Linux | libsoup2 sles 15.7 | 2.74.3-150600.4.42.1 | [SUSE-SU-2026:4703-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4703-1.md) | Nov 7, 2026 | | Linux | libsoup3 Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | libsoup3 amzn 2023 | 3.7.2-1.amzn2023 | [ALAS2023-2026-3144](https://patchblox.com/security/data/fix/linux/alas2023-2026-3144.md) | Sep 28, 2026 | | Linux | libsoup3-debuginfo Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | libsoup3-debuginfo amzn 2023 | 3.7.2-1.amzn2023 | [ALAS2023-2026-3144](https://patchblox.com/security/data/fix/linux/alas2023-2026-3144.md) | Sep 28, 2026 | | Linux | libsoup3-debugsource Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | libsoup3-debugsource amzn 2023 | 3.7.2-1.amzn2023 | [ALAS2023-2026-3144](https://patchblox.com/security/data/fix/linux/alas2023-2026-3144.md) | Sep 28, 2026 | | Linux | libsoup3-devel Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | libsoup3-devel amzn 2023 | 3.7.2-1.amzn2023 | [ALAS2023-2026-3144](https://patchblox.com/security/data/fix/linux/alas2023-2026-3144.md) | Sep 28, 2026 | | Linux | libsoup3-doc Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | libsoup3-doc amzn 2023 | 3.7.2-1.amzn2023 | [ALAS2023-2026-3144](https://patchblox.com/security/data/fix/linux/alas2023-2026-3144.md) | Sep 28, 2026 | | Linux | mingw32-libsoup3 Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | mingw32-libsoup3-debuginfo Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | mingw64-libsoup3 Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | | Linux | mingw64-libsoup3-debuginfo Fedora 43 | 3.6.6-5.fc43 | [FEDORA-2026-FCE2F41203](https://patchblox.com/security/data/fix/linux/fedora-2026-fce2f41203.md) | Sep 5, 2026 | --- Data as of 2026-11-10T07:50:38Z UTC. 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