# CVE-2025-11731: Libxslt: type confusion in exsltfuncresultcompfunction of libxslt CVE-2025-11731 is fixed in 11 products on 1 platform, first by libxslt1.1 1.1.43-0.3, released October 13, 2025. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2025-11731 - Priority: Routine - CVSS: 3.1 (Low) - EPSS: 0.0028 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 13, 2025 - Weakness: Access of Resource Using Incompatible Type ('Type Confusion') - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-11731 ## Description A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libxslt Debian 14 | 1.1.43-0.3 | [DEBIAN-CVE-2025-11731](https://patchblox.com/security/data/fix/linux/debian-cve-2025-11731.md) | Oct 14, 2025 | | Linux | libxslt opensuse-leap 15.6 | 1.1.34-150400.3.13.1 | [SUSE-SU-2025:3875-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3875-1.md) | Oct 30, 2025 | | Linux | libxslt opensuse-leap 16.0 | 1.1.43-160000.3.1 | [OPENSUSE-SU-2025:20050-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2025-20050-1.md) | Nov 19, 2025 | | Linux | libxslt sles 15.6 | 1.1.34-150400.3.13.1 | [SUSE-SU-2025:3875-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3875-1.md) | Oct 30, 2025 | | Linux | libxslt sles 15.7 | 1.1.34-150400.3.13.1 | [SUSE-SU-2025:3875-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3875-1.md) | Oct 30, 2025 | | Linux | libxslt sles 16.0 | 1.1.43-160000.3.1 | [SUSE-SU-2025:21008-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-21008-1.md) | Nov 19, 2025 | | Linux | libxslt-python opensuse-leap 15.6 | 1.1.32-150000.3.28.1 | [SUSE-SU-2025:3743-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3743-1.md) | Oct 23, 2025 | | Linux | libxslt1.1 Ubuntu 26.04.1 LTS (resolute) | 1.1.43-0.3 | [libxslt1.1 1.1.43-0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libxslt1.1-1.1.43-0.3.md) | Oct 13, 2025 | | Linux | mingw-libxslt Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | mingw32-libxslt Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | mingw32-libxslt-debuginfo Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | mingw32-libxslt-static Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | mingw64-libxslt Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | mingw64-libxslt-debuginfo Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | mingw64-libxslt-static Fedora 43 | 1.1.43-4.fc43 | [FEDORA-2026-84BE018D47](https://patchblox.com/security/data/fix/linux/fedora-2026-84be018d47.md) | Jan 13, 2026 | | Linux | xsltproc Ubuntu 26.04.1 LTS (resolute) | 1.1.43-0.3 | [xsltproc 1.1.43-0.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-xsltproc-1.1.43-0.3.md) | Oct 13, 2025 | --- Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.