{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"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-2026-26998","title":"Title"},{"category":"description","text":"Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.38 and 3.6.9, there is a potential vulnerability in Traefik managing the ForwardAuth middleware responses. When Traefik is configured to use the ForwardAuth middleware, the response body from the authentication server is read entirely into memory without any size limit. There is no maxResponseBodySize configuration to restrict the amount of data read from the authentication server response. If the authentication server returns an unexpectedly large or unbounded response body, Traefik will allocate unlimited memory, potentially causing an out-of-memory (OOM) condition that crashes the process. This results in a denial of service for all routes served by the affected Traefik instance. This issue has been patched in versions 2.11.38 and 3.6.9.","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-2026-26998","url":"https://www.suse.com/security/cve/CVE-2026-26998"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1259276 for CVE-2026-26998","url":"https://bugzilla.suse.com/1259276"}],"title":"SUSE CVE CVE-2026-26998","tracking":{"current_release_date":"2026-03-11T00:25:10Z","generator":{"date":"2026-03-07T00:25:46Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-26998","initial_release_date":"2026-03-07T00:25:46Z","revision_history":[{"date":"2026-03-07T00:25:46Z","number":"2","summary":"references added,severity changed from  to moderate"},{"date":"2026-03-11T00:25:10Z","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":"traefik-3.6.10-1.1","product":{"name":"traefik-3.6.10-1.1","product_id":"traefik-3.6.10-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/traefik@3.6.10-1.1"}}},{"category":"product_version","name":"traefik2-2.11.40-1.1","product":{"name":"traefik2-2.11.40-1.1","product_id":"traefik2-2.11.40-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/traefik2@2.11.40-1.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"traefik-3.6.10-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:traefik-3.6.10-1.1"},"product_reference":"traefik-3.6.10-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"traefik2-2.11.40-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:traefik2-2.11.40-1.1"},"product_reference":"traefik2-2.11.40-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2026-26998","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2026-26998"}],"notes":[{"category":"general","text":"Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.38 and 3.6.9, there is a potential vulnerability in Traefik managing the ForwardAuth middleware responses. When Traefik is configured to use the ForwardAuth middleware, the response body from the authentication server is read entirely into memory without any size limit. There is no maxResponseBodySize configuration to restrict the amount of data read from the authentication server response. If the authentication server returns an unexpectedly large or unbounded response body, Traefik will allocate unlimited memory, potentially causing an out-of-memory (OOM) condition that crashes the process. This results in a denial of service for all routes served by the affected Traefik instance. This issue has been patched in versions 2.11.38 and 3.6.9.","title":"CVE description"}],"product_status":{"recommended":["openSUSE Tumbleweed:traefik-3.6.10-1.1","openSUSE Tumbleweed:traefik2-2.11.40-1.1"]},"references":[{"category":"external","summary":"CVE-2026-26998","url":"https://www.suse.com/security/cve/CVE-2026-26998"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1259276 for CVE-2026-26998","url":"https://bugzilla.suse.com/1259276"}],"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:traefik-3.6.10-1.1","openSUSE Tumbleweed:traefik2-2.11.40-1.1"]}],"threats":[{"category":"impact","date":"2026-03-05T21:04:25Z","details":"moderate"}],"title":"CVE-2026-26998"}]}