Red Hat Product Errata RHSA-2026:19197 - Security Advisory Issued: 2026-05-19 Updated: 2026-05-19 RHSA-2026:19197 - Security Advisory Overview Updated Packages Synopsis Low: python-jwcrypto security update Type/Severity Security Advisory: Low Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for python-jwcrypto is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Low. 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): JWCrypto: python-cryptography: python: JWCrypto: Memory exhaustion via crafted compressed JWE tokens (CVE-2026-39373) 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 - 2456187 - CVE-2026-39373 JWCrypto: python-cryptography: python: JWCrypto: Memory exhaustion via crafted compressed JWE tokens CVEs CVE-2026-39373 References https://access.redhat.com/security/updates/classification/#low 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-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 x86_64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 x86_64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for IBM z Systems 9 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 s390x python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 s390x python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for Power, little endian 9 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 ppc64le python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 ppc64le python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for ARM 64 9 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 aarch64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 aarch64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 ppc64le python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 x86_64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 aarch64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 s390x python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 x86_64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 aarch64 python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 ppc64le python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 SRPM python-jwcrypto-1.5.6-3.el9_8.src.rpm SHA-256: 56d9c0a76720400f6a4b7ba57ee364f5a8dd042489ade421ed89f274c6f56cd4 s390x python3-jwcrypto-1.5.6-3.el9_8.noarch.rpm SHA-256: bdf3fad5461c52afb37d134e2043eaef18b2b4ef25decb32f5c8d43f2e90a18b The Red Hat security contact is secalert@redhat.com . 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