{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"category":"csaf_vex","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":"SUSE CVE-2026-28356","title":"Title"},{"category":"description","text":"multipart is a fast multipart/form-data parser for python. Prior to 1.2.2, 1.3.1 and 1.4.0-dev, the parse_options_header() function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking (ReDoS) when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service (DoS) attacks against web applications using this library to parse request headers or multipart/form-data streams. The issue is fixed in 1.2.2, 1.3.1 and 1.4.0-dev.","title":"Description of the CVE"},{"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":"CVE-2026-28356","url":"https://www.suse.com/security/cve/CVE-2026-28356"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1259610 for CVE-2026-28356","url":"https://bugzilla.suse.com/1259610"}],"title":"SUSE CVE CVE-2026-28356","tracking":{"current_release_date":"2026-03-15T00:24:01Z","generator":{"date":"2026-03-13T13:16:03Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-28356","initial_release_date":"2026-03-13T13:16:03Z","revision_history":[{"date":"2026-03-13T13:16:03Z","number":"2","summary":"references added,severity changed from  to important"},{"date":"2026-03-15T00:24:01Z","number":"3","summary":"vulnerabilities added"}],"status":"interim","version":"3"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"openSUSE Tumbleweed","product":{"name":"openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed","product_identification_helper":{"cpe":"cpe:/o:opensuse:tumbleweed"}}},{"category":"product_version","name":"python311-multipart-1.3.1-1.1","product":{"name":"python311-multipart-1.3.1-1.1","product_id":"python311-multipart-1.3.1-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/python311-multipart@1.3.1-1.1"}}},{"category":"product_version","name":"python313-multipart-1.3.1-1.1","product":{"name":"python313-multipart-1.3.1-1.1","product_id":"python313-multipart-1.3.1-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/python313-multipart@1.3.1-1.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"python311-multipart-1.3.1-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:python311-multipart-1.3.1-1.1"},"product_reference":"python311-multipart-1.3.1-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"python313-multipart-1.3.1-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:python313-multipart-1.3.1-1.1"},"product_reference":"python313-multipart-1.3.1-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2026-28356","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2026-28356"}],"notes":[{"category":"general","text":"multipart is a fast multipart/form-data parser for python. Prior to 1.2.2, 1.3.1 and 1.4.0-dev, the parse_options_header() function in multipart.py uses a regular expression with an ambiguous alternation, which can cause exponential backtracking (ReDoS) when parsing maliciously crafted HTTP or multipart segment headers. This can be abused for denial of service (DoS) attacks against web applications using this library to parse request headers or multipart/form-data streams. The issue is fixed in 1.2.2, 1.3.1 and 1.4.0-dev.","title":"CVE description"}],"product_status":{"recommended":["openSUSE Tumbleweed:python311-multipart-1.3.1-1.1","openSUSE Tumbleweed:python313-multipart-1.3.1-1.1"]},"references":[{"category":"external","summary":"CVE-2026-28356","url":"https://www.suse.com/security/cve/CVE-2026-28356"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1259610 for CVE-2026-28356","url":"https://bugzilla.suse.com/1259610"}],"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":["openSUSE Tumbleweed:python311-multipart-1.3.1-1.1","openSUSE Tumbleweed:python313-multipart-1.3.1-1.1"]}],"threats":[{"category":"impact","date":"2026-03-12T19:03:01Z","details":"important"}],"title":"CVE-2026-28356"}]}