Red Hat Product Errata RHSA-2026:28243 - Security Advisory Issued: 2026-06-23 Updated: 2026-06-23 RHSA-2026:28243 - Security Advisory Overview Updated Packages Synopsis Moderate: libxslt security update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for libxslt is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description libxslt is a library for transforming XML files into other textual formats (including HTML, plain text, and other XML representations of the underlying data) using the standard XSLT stylesheet transformation mechanism. Security Fix(es): libxslt: use-after-free with key data stored cross-RVT (CVE-2025-10911) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2397838 - CVE-2025-10911 libxslt: use-after-free with key data stored cross-RVT CVEs CVE-2025-10911 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 9 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 x86_64 libxslt-1.1.34-14.el9_8.1.i686.rpm SHA-256: 7d86a76faa9cdd775c37aef4020e858f56e9a1c845e5d118f9e5e5f8e5831d4c libxslt-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: b702d5bdce34b424959427b728e319b17747a5a1249be5f908264c5cfcbddf38 libxslt-debuginfo-1.1.34-14.el9_8.1.i686.rpm SHA-256: 930c539d7fc2b314079b5eccdf8b0c7da164bdd3b6d9673e2ee1d33e63e0d88f libxslt-debuginfo-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: 14774e338c407d24ff6dd957e5f622871d4c86b1b1562baa1322258b572b8bf3 libxslt-debugsource-1.1.34-14.el9_8.1.i686.rpm SHA-256: be48ef5240ad26bf309f0192c8d4245926b3efc3259297d82f5ea143f59aba19 libxslt-debugsource-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: 0fbc8ba58cc27519e47ceb374dcca3332e8dc8efd7810925e4cce6a5d69fb26c libxslt-devel-1.1.34-14.el9_8.1.i686.rpm SHA-256: 0dc6359141b56414b22045b333985fffc60a2e260c6e9c9f9aa058b74a1a25ea libxslt-devel-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: db59466a7269b9ecddeebff8ff6e57102bd2e69dad6910104fcfc382247d9e80 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 x86_64 libxslt-1.1.34-14.el9_8.1.i686.rpm SHA-256: 7d86a76faa9cdd775c37aef4020e858f56e9a1c845e5d118f9e5e5f8e5831d4c libxslt-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: b702d5bdce34b424959427b728e319b17747a5a1249be5f908264c5cfcbddf38 libxslt-debuginfo-1.1.34-14.el9_8.1.i686.rpm SHA-256: 930c539d7fc2b314079b5eccdf8b0c7da164bdd3b6d9673e2ee1d33e63e0d88f libxslt-debuginfo-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: 14774e338c407d24ff6dd957e5f622871d4c86b1b1562baa1322258b572b8bf3 libxslt-debugsource-1.1.34-14.el9_8.1.i686.rpm SHA-256: be48ef5240ad26bf309f0192c8d4245926b3efc3259297d82f5ea143f59aba19 libxslt-debugsource-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: 0fbc8ba58cc27519e47ceb374dcca3332e8dc8efd7810925e4cce6a5d69fb26c libxslt-devel-1.1.34-14.el9_8.1.i686.rpm SHA-256: 0dc6359141b56414b22045b333985fffc60a2e260c6e9c9f9aa058b74a1a25ea libxslt-devel-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: db59466a7269b9ecddeebff8ff6e57102bd2e69dad6910104fcfc382247d9e80 Red Hat Enterprise Linux for IBM z Systems 9 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 s390x libxslt-1.1.34-14.el9_8.1.s390x.rpm SHA-256: fda16d3d4c82029557173dd3133619bab9baa4e83b795730c00d2a67214ecd64 libxslt-debuginfo-1.1.34-14.el9_8.1.s390x.rpm SHA-256: 1252adb21ffff4e91d1c81d49e8c1ad335f44ef22d17ca78fee21bce89d99a20 libxslt-debugsource-1.1.34-14.el9_8.1.s390x.rpm SHA-256: 41ed355d9372b831d6b6f25afab69dd4130bd74fc9afffef759115b724631d9f libxslt-devel-1.1.34-14.el9_8.1.s390x.rpm SHA-256: c0078cd1b00e016fc19ec460883eb7a8e63fc48752b6f46e3a38eb3687ae600f Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 s390x libxslt-1.1.34-14.el9_8.1.s390x.rpm SHA-256: fda16d3d4c82029557173dd3133619bab9baa4e83b795730c00d2a67214ecd64 libxslt-debuginfo-1.1.34-14.el9_8.1.s390x.rpm SHA-256: 1252adb21ffff4e91d1c81d49e8c1ad335f44ef22d17ca78fee21bce89d99a20 libxslt-debugsource-1.1.34-14.el9_8.1.s390x.rpm SHA-256: 41ed355d9372b831d6b6f25afab69dd4130bd74fc9afffef759115b724631d9f libxslt-devel-1.1.34-14.el9_8.1.s390x.rpm SHA-256: c0078cd1b00e016fc19ec460883eb7a8e63fc48752b6f46e3a38eb3687ae600f Red Hat Enterprise Linux for Power, little endian 9 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 ppc64le libxslt-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 21182c0b0ad0d4c797ad743817e62e57ae8166b4a8eb01c636d920600f2aa392 libxslt-debuginfo-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 8a319c5e9baced56fe353503c6eb7e4b28921c75face7965b59c53da52dda210 libxslt-debugsource-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 1c8163a150af3ba4d075c35c3da2eb9864801b20d5e6fc91d57d6bcceea82784 libxslt-devel-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 35de297adab07156c362a7e8e23c4a2757eb8081edc3445005dfb55b1358b32a Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 ppc64le libxslt-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 21182c0b0ad0d4c797ad743817e62e57ae8166b4a8eb01c636d920600f2aa392 libxslt-debuginfo-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 8a319c5e9baced56fe353503c6eb7e4b28921c75face7965b59c53da52dda210 libxslt-debugsource-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 1c8163a150af3ba4d075c35c3da2eb9864801b20d5e6fc91d57d6bcceea82784 libxslt-devel-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 35de297adab07156c362a7e8e23c4a2757eb8081edc3445005dfb55b1358b32a Red Hat Enterprise Linux for ARM 64 9 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 aarch64 libxslt-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: c9c423fac638f5cb332c065c2a4d78b969a52e0d8f30b894494062ebf9e7e8aa libxslt-debuginfo-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: 3b196194e772c74d08d080e1cbf89d74f4708b893b97a380ce084293e7898a0a libxslt-debugsource-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: a963474832784b333d3cff078ca3b6bf873156e180e1233e4419530b1ddf711f libxslt-devel-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: 0567a407a531ca7bef49e14d0079ac378f23087aa0286688912cd31e7081c546 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 aarch64 libxslt-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: c9c423fac638f5cb332c065c2a4d78b969a52e0d8f30b894494062ebf9e7e8aa libxslt-debuginfo-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: 3b196194e772c74d08d080e1cbf89d74f4708b893b97a380ce084293e7898a0a libxslt-debugsource-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: a963474832784b333d3cff078ca3b6bf873156e180e1233e4419530b1ddf711f libxslt-devel-1.1.34-14.el9_8.1.aarch64.rpm SHA-256: 0567a407a531ca7bef49e14d0079ac378f23087aa0286688912cd31e7081c546 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 ppc64le libxslt-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 21182c0b0ad0d4c797ad743817e62e57ae8166b4a8eb01c636d920600f2aa392 libxslt-debuginfo-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 8a319c5e9baced56fe353503c6eb7e4b28921c75face7965b59c53da52dda210 libxslt-debugsource-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 1c8163a150af3ba4d075c35c3da2eb9864801b20d5e6fc91d57d6bcceea82784 libxslt-devel-1.1.34-14.el9_8.1.ppc64le.rpm SHA-256: 35de297adab07156c362a7e8e23c4a2757eb8081edc3445005dfb55b1358b32a Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 SRPM libxslt-1.1.34-14.el9_8.1.src.rpm SHA-256: a63ad81bc1461ee56521e3b488b804cf2e43ec2b5dd5e7b3ab4bfe1e8a59d748 x86_64 libxslt-1.1.34-14.el9_8.1.i686.rpm SHA-256: 7d86a76faa9cdd775c37aef4020e858f56e9a1c845e5d118f9e5e5f8e5831d4c libxslt-1.1.34-14.el9_8.1.x86_64.rpm SHA-256: b702d5bdce34b42495942