Red Hat Product Errata RHSA-2026:13641 - Security Advisory Issued: 2026-05-05 Updated: 2026-05-05 RHSA-2026:13641 - Security Advisory Overview Updated Packages Synopsis Moderate: python-tornado 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 python-tornado is now available for Red Hat Enterprise Linux 10. 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 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): tornado-python: Tornado: Denial of Service via large multipart bodies (CVE-2026-31958) tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments (CVE-2026-35536) 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 10 x86_64 Red Hat Enterprise Linux for IBM z Systems 10 s390x Red Hat Enterprise Linux for Power, little endian 10 ppc64le Red Hat Enterprise Linux for ARM 64 10 aarch64 Fixes BZ - 2446765 - CVE-2026-31958 tornado-python: Tornado: Denial of Service via large multipart bodies BZ - 2454716 - CVE-2026-35536 tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments CVEs CVE-2026-31958 CVE-2026-35536 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 10 SRPM python-tornado-6.5.5-1.el10_1.1.src.rpm SHA-256: 2d8a0999d10469348c088b680a2662bdbd351757a4ec990c2ebd9e2b7e513205 x86_64 python-tornado-debugsource-6.5.5-1.el10_1.1.x86_64.rpm SHA-256: 5aa607f7b7ef9120b80fa24647672e03cf7a68f4992ed019e0e29e80f365dc0c python3-tornado-6.5.5-1.el10_1.1.x86_64.rpm SHA-256: d950ab6f14314c3136eb5e11900d9103583596be7345019897ebf53a88032338 python3-tornado-debuginfo-6.5.5-1.el10_1.1.x86_64.rpm SHA-256: b5c831c722f479c21718a88146666f1b85de9299c87a59a9bb2e810bf16f14fc Red Hat Enterprise Linux for IBM z Systems 10 SRPM python-tornado-6.5.5-1.el10_1.1.src.rpm SHA-256: 2d8a0999d10469348c088b680a2662bdbd351757a4ec990c2ebd9e2b7e513205 s390x python-tornado-debugsource-6.5.5-1.el10_1.1.s390x.rpm SHA-256: 69b3aeeb494f82eecc06181b3f2ef3819767961c2c2f7c5ff3ca161eac65f9eb python3-tornado-6.5.5-1.el10_1.1.s390x.rpm SHA-256: fd6638c98ab3a8070dd8800babc77eeb102150f07b49c70dac83b5d7ac0a9c8e python3-tornado-debuginfo-6.5.5-1.el10_1.1.s390x.rpm SHA-256: c11b3b4916afbed4afb22e39c42523c27ce28da54ff88f8f49d153c87cbd669b Red Hat Enterprise Linux for Power, little endian 10 SRPM python-tornado-6.5.5-1.el10_1.1.src.rpm SHA-256: 2d8a0999d10469348c088b680a2662bdbd351757a4ec990c2ebd9e2b7e513205 ppc64le python-tornado-debugsource-6.5.5-1.el10_1.1.ppc64le.rpm SHA-256: 3aeb2d136b0f21a960a3cbc799cd610397f156883e1712ab71844951d492b8a2 python3-tornado-6.5.5-1.el10_1.1.ppc64le.rpm SHA-256: 838ee8365e773c1c69c629690c490bbbd4e32d94754fa2abf748e3e71483c34b python3-tornado-debuginfo-6.5.5-1.el10_1.1.ppc64le.rpm SHA-256: 66941d2f5cacaccf73b13e11b918fefe64e4ce126e5daebf26b7747d36f7fa5b Red Hat Enterprise Linux for ARM 64 10 SRPM python-tornado-6.5.5-1.el10_1.1.src.rpm SHA-256: 2d8a0999d10469348c088b680a2662bdbd351757a4ec990c2ebd9e2b7e513205 aarch64 python-tornado-debugsource-6.5.5-1.el10_1.1.aarch64.rpm SHA-256: 39bc52301133be5ff0983af2490f1d92ff4ded31084c79d24941166bfb4f0dfb python3-tornado-6.5.5-1.el10_1.1.aarch64.rpm SHA-256: 4f7f150e623d7a472cb43bd22d002bca57a6165d1186dcfa3697ea043226b538 python3-tornado-debuginfo-6.5.5-1.el10_1.1.aarch64.rpm SHA-256: 5a3c9befb7f219ff24fe703d62d1f1ac80087470a3caa44c57a3afde6daa7a16 The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .