{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_security_advisory","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"Security update for python-cryptography","title":"Title of the patch"},{"category":"description","text":"This update for python-cryptography fixes the following issues:\n\n- CVE-2026-26007: missing validation can lead to security issues for signature verification (ECDSA) and shared key\n  negotiation (ECDH) (bsc#1258074).\n","title":"Description of the patch"},{"category":"details","text":"SUSE-SLE-Micro-6.1-427","title":"Patchnames"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"SUSE ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"self","summary":"URL of this CSAF notice","url":"https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_20655-1.json"},{"category":"self","summary":"URL for SUSE-SU-2026:20655-1","url":"https://www.suse.com/support/update/announcement/2026/suse-su-202620655-1/"},{"category":"self","summary":"E-Mail link for SUSE-SU-2026:20655-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-March/024755.html"},{"category":"self","summary":"SUSE Bug 1258074","url":"https://bugzilla.suse.com/1258074"},{"category":"self","summary":"SUSE CVE CVE-2026-26007 page","url":"https://www.suse.com/security/cve/CVE-2026-26007/"}],"title":"Security update for python-cryptography","tracking":{"current_release_date":"2026-03-05T14:25:02Z","generator":{"date":"2026-03-05T14:25:02Z","engine":{"name":"cve-database.git:bin/generate-csaf.pl","version":"1"}},"id":"SUSE-SU-2026:20655-1","initial_release_date":"2026-03-05T14:25:02Z","revision_history":[{"date":"2026-03-05T14:25:02Z","number":"1","summary":"Current version"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_version","name":"python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64","product":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64","product_id":"python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64"}}],"category":"architecture","name":"aarch64"},{"branches":[{"category":"product_version","name":"python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le","product":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le","product_id":"python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le"}}],"category":"architecture","name":"ppc64le"},{"branches":[{"category":"product_version","name":"python311-cryptography-42.0.4-slfo.1.1_3.1.s390x","product":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.s390x","product_id":"python311-cryptography-42.0.4-slfo.1.1_3.1.s390x"}}],"category":"architecture","name":"s390x"},{"branches":[{"category":"product_version","name":"python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64","product":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64","product_id":"python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64"}}],"category":"architecture","name":"x86_64"},{"branches":[{"category":"product_name","name":"SUSE Linux Micro 6.1","product":{"name":"SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1","product_identification_helper":{"cpe":"cpe:/o:suse:sl-micro:6.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64 as component of SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64"},"product_reference":"python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64","relates_to_product_reference":"SUSE Linux Micro 6.1"},{"category":"default_component_of","full_product_name":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le as component of SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le"},"product_reference":"python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le","relates_to_product_reference":"SUSE Linux Micro 6.1"},{"category":"default_component_of","full_product_name":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.s390x as component of SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.s390x"},"product_reference":"python311-cryptography-42.0.4-slfo.1.1_3.1.s390x","relates_to_product_reference":"SUSE Linux Micro 6.1"},{"category":"default_component_of","full_product_name":{"name":"python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64 as component of SUSE Linux Micro 6.1","product_id":"SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64"},"product_reference":"python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64","relates_to_product_reference":"SUSE Linux Micro 6.1"}]},"vulnerabilities":[{"cve":"CVE-2026-26007","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2026-26007"}],"notes":[{"category":"general","text":"cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.","title":"CVE description"}],"product_status":{"recommended":["SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.s390x","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64"]},"references":[{"category":"external","summary":"CVE-2026-26007","url":"https://www.suse.com/security/cve/CVE-2026-26007"},{"category":"external","summary":"SUSE Bug 1258074 for CVE-2026-26007","url":"https://bugzilla.suse.com/1258074"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.s390x","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64"]}],"scores":[{"cvss_v3":{"baseScore":5.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"products":["SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.aarch64","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.ppc64le","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.s390x","SUSE Linux Micro 6.1:python311-cryptography-42.0.4-slfo.1.1_3.1.x86_64"]}],"threats":[{"category":"impact","date":"2026-03-05T14:25:02Z","details":"moderate"}],"title":"CVE-2026-26007"}]}