{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-15957 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-15957 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-15957 is a high-severity denial of service vulnerability in aws-sdk-rust, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-15957 and fix it if it is affected.\n\nWhat it is: CVE-2026-15957 is a high-severity denial of service vulnerability in aws-sdk-rust, published on 21 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-15957 in the wild and no public exploit code.\n\nAffected product: aws-sdk-rust. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-15957/ (Markdown: https://insights.sbomify.com/CVE-2026-15957/index.md)","id":"CVE-2026-15957","markdown":"https://insights.sbomify.com/CVE-2026-15957/index.md","name":"CVE-2026-15957","record":{"aliases":["GHSA-4f2p-7j38-4xrg"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust SDK library","requires_auth":"none","summary":"Remote attackers can cause denial of service via stack exhaustion in smithy-rs generated deserializers by sending deeply nested data.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"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.\n\nUncontrolled 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.\n\nTo 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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Denial of service in aws-sdk-rust","id":"CVE-2026-15957","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Easy Dropbox Integration \u003c 2.2.0 - Unauthenticated Arbitrary Connected Dropbox File Access and Upload via nopriv AJAX","id":"CVE-2026-15958"},"packages":[],"prev":{"headline":"Path traversal in Db2","id":"CVE-2026-15955"},"products":["aws-sdk-rust"],"published":"2026-07-21","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-20","vendors":["AWS"]},"summary":"Remote attackers can cause denial of service via stack exhaustion in smithy-rs generated deserializers by sending deeply nested data.","url":"https://insights.sbomify.com/CVE-2026-15957/"}