{"id":82359,"date":"2026-07-21T23:03:55","date_gmt":"2026-07-21T19:33:55","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-15957-uncontrolled-recursion-in-smithy-rs-generated-json-cbor-and-xml-deserializers-allows-unauthenticated-remote-denial-of-service-via-recursive-shapes\/"},"modified":"2026-07-21T23:03:55","modified_gmt":"2026-07-21T19:33:55","slug":"cve-2026-15957-uncontrolled-recursion-in-smithy-rs-generated-json-cbor-and-xml-deserializers-allows-unauthenticated-remote-denial-of-service-via-recursive-shapes","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-15957-uncontrolled-recursion-in-smithy-rs-generated-json-cbor-and-xml-deserializers-allows-unauthenticated-remote-denial-of-service-via-recursive-shapes\/","title":{"rendered":"CVE-2026-15957 &#8211; Uncontrolled recursion in smithy-rs generated JSON, CBOR, and XML deserializers allows unauthenticated remote denial of service via recursive shapes"},"content":{"rendered":"<p>CVE ID :CVE-2026-15957<\/p>\n<p>  Published : July 21, 2026, 7:33 p.m. | 11\u00a0minutes ago<\/p>\n<p>  Description :Smithy-RS is a Rust code generation and runtime framework that generates HTTP clients and servers from Smithy interface definitions, powering the AWS SDK for Rust and custom service implementations.<\/p>\n<p>Uncontrolled recursion in the JSON, CBOR, and XML deserializer functions emitted by Amazon smithy-rs code generation could allow remote attackers to cause a denial of service (process abort via stack exhaustion) via a small request containing deeply nested data for a recursive model shape to a generated SDK or server.<\/p>\n<p>To mitigate this issue, users should upgrade to aws-sdk-rust release-2026-06-02 or later. Users building custom servers with smithy-rs codegen should regenerate from smithy-rs release-2026-06-01 or later.<\/p>\n<p>  Severity: 8.7 | HIGH<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-15957 Published : July 21, 2026, 7:33 p.m. | 11\u00a0minutes ago Description :Smithy-RS is a Rust code generation and runtime framework that generates HTTP clients and servers from Smithy interface definitions, powering the AWS SDK for Rust and custom service implementations. Uncontrolled recursion in the JSON, CBOR, and XML deserializer functions emitted by &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-82359","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82359","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=82359"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82359\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82359"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}