Red Hat Product Errata RHSA-2026:66204 - Security Advisory Issued: 2026-09-09 Updated: 2026-09-09 RHSA-2026:66204 - Security Advisory Overview Updated Packages Synopsis Important: python-lxml security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for python-lxml is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. 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 Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href (CVE-2026-49825) 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 - 2520368 - CVE-2026-49825 lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href CVEs CVE-2026-49825 References https://access.redhat.com/security/updates/classification/#important 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 python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 x86_64 python-lxml-debugsource-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 2d332b8468eef83fa3cf8cbd38d157444923479d49aaee8709addade883f8f7a python3-lxml-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: b89b223a5a80d94462d6964aed440d2bab9bb659c653f1fb0200a6bfa4642adb python3-lxml-debuginfo-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 76762d30456c9ed38faa90e8b4a2a035f6615d3645bd010812129d4fa0974a6c Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 x86_64 python-lxml-debugsource-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 2d332b8468eef83fa3cf8cbd38d157444923479d49aaee8709addade883f8f7a python3-lxml-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: b89b223a5a80d94462d6964aed440d2bab9bb659c653f1fb0200a6bfa4642adb python3-lxml-debuginfo-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 76762d30456c9ed38faa90e8b4a2a035f6615d3645bd010812129d4fa0974a6c Red Hat Enterprise Linux for IBM z Systems 9 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 s390x python-lxml-debugsource-4.6.5-3.el9_8.1.s390x.rpm SHA-256: 66f55f2bd5a61f4f1f1cc75ecda09c29eebe081123a2c6ddd268cf1373e9668c python3-lxml-4.6.5-3.el9_8.1.s390x.rpm SHA-256: 0602f56e2c5aae93a1a703698b933e35a9120648f4bf6f40e4865d15cfbf9984 python3-lxml-debuginfo-4.6.5-3.el9_8.1.s390x.rpm SHA-256: b5516ccd7bf9f0dcf34f919e343e82a8d1e91d4610b196a635f7c1871bf98e42 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 s390x python-lxml-debugsource-4.6.5-3.el9_8.1.s390x.rpm SHA-256: 66f55f2bd5a61f4f1f1cc75ecda09c29eebe081123a2c6ddd268cf1373e9668c python3-lxml-4.6.5-3.el9_8.1.s390x.rpm SHA-256: 0602f56e2c5aae93a1a703698b933e35a9120648f4bf6f40e4865d15cfbf9984 python3-lxml-debuginfo-4.6.5-3.el9_8.1.s390x.rpm SHA-256: b5516ccd7bf9f0dcf34f919e343e82a8d1e91d4610b196a635f7c1871bf98e42 Red Hat Enterprise Linux for Power, little endian 9 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 ppc64le python-lxml-debugsource-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: 7e6b846202a24ff65a9e524e54c35554c0fd24d50586eb527338ee74820d1ab4 python3-lxml-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: be22d2449fbd2a3604ba5f79ad18ccbfa077fe98260fb9726c96580e301dd885 python3-lxml-debuginfo-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: ec5c64f1c7b66efaeab2017a2f3112fc615d5682fdb2c663c468db0fefac3d0c Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 ppc64le python-lxml-debugsource-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: 7e6b846202a24ff65a9e524e54c35554c0fd24d50586eb527338ee74820d1ab4 python3-lxml-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: be22d2449fbd2a3604ba5f79ad18ccbfa077fe98260fb9726c96580e301dd885 python3-lxml-debuginfo-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: ec5c64f1c7b66efaeab2017a2f3112fc615d5682fdb2c663c468db0fefac3d0c Red Hat Enterprise Linux for ARM 64 9 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 aarch64 python-lxml-debugsource-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: b1ccd62fca57fb4ea459d4ecf7a400de9639d1a0f43f49414878a7287caf1cff python3-lxml-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: 085c7de219007b921eb5edb2dd26297e89c0aaec0348a8bc0141366bb130de29 python3-lxml-debuginfo-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: a9e9a9a5433edf9429b9cde55952a3f69c3bfd1a54811df234db79216e73cb18 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 aarch64 python-lxml-debugsource-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: b1ccd62fca57fb4ea459d4ecf7a400de9639d1a0f43f49414878a7287caf1cff python3-lxml-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: 085c7de219007b921eb5edb2dd26297e89c0aaec0348a8bc0141366bb130de29 python3-lxml-debuginfo-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: a9e9a9a5433edf9429b9cde55952a3f69c3bfd1a54811df234db79216e73cb18 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 ppc64le python-lxml-debugsource-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: 7e6b846202a24ff65a9e524e54c35554c0fd24d50586eb527338ee74820d1ab4 python3-lxml-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: be22d2449fbd2a3604ba5f79ad18ccbfa077fe98260fb9726c96580e301dd885 python3-lxml-debuginfo-4.6.5-3.el9_8.1.ppc64le.rpm SHA-256: ec5c64f1c7b66efaeab2017a2f3112fc615d5682fdb2c663c468db0fefac3d0c Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 x86_64 python-lxml-debugsource-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 2d332b8468eef83fa3cf8cbd38d157444923479d49aaee8709addade883f8f7a python3-lxml-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: b89b223a5a80d94462d6964aed440d2bab9bb659c653f1fb0200a6bfa4642adb python3-lxml-debuginfo-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 76762d30456c9ed38faa90e8b4a2a035f6615d3645bd010812129d4fa0974a6c Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 aarch64 python-lxml-debugsource-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: b1ccd62fca57fb4ea459d4ecf7a400de9639d1a0f43f49414878a7287caf1cff python3-lxml-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: 085c7de219007b921eb5edb2dd26297e89c0aaec0348a8bc0141366bb130de29 python3-lxml-debuginfo-4.6.5-3.el9_8.1.aarch64.rpm SHA-256: a9e9a9a5433edf9429b9cde55952a3f69c3bfd1a54811df234db79216e73cb18 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 s390x python-lxml-debugsource-4.6.5-3.el9_8.1.s390x.rpm SHA-256: 66f55f2bd5a61f4f1f1cc75ecda09c29eebe081123a2c6ddd268cf1373e9668c python3-lxml-4.6.5-3.el9_8.1.s390x.rpm SHA-256: 0602f56e2c5aae93a1a703698b933e35a9120648f4bf6f40e4865d15cfbf9984 python3-lxml-debuginfo-4.6.5-3.el9_8.1.s390x.rpm SHA-256: b5516ccd7bf9f0dcf34f919e343e82a8d1e91d4610b196a635f7c1871bf98e42 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 SRPM python-lxml-4.6.5-3.el9_8.1.src.rpm SHA-256: 40b7385f092a832ecb162490b5d00807e5db8429c49b5d07237009d9528be536 x86_64 python-lxml-debugsource-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: 2d332b8468eef83fa3cf8cbd38d157444923479d49aaee8709addade883f8f7a python3-lxml-4.6.5-3.el9_8.1.x86_64.rpm SHA-256: b89b223a5a80d94462d6964aed440d2bab9bb659c653f1fb0200a6bfa4642adb python3-lxml-debuginfo-4.6.5-3.el9_8.1.x86_