{"answers":{"affected":"1 open source package ship an affected version, including ash.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82738 exists.","fix":"Upgrade ash to 3.32.2 or later.","what":"CVE-2026-82738 is a medium-severity denial of service vulnerability in ash-project ash, published on 1 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-82738 and fix it if it is affected.\n\nWhat it is: CVE-2026-82738 is a medium-severity denial of service vulnerability in ash-project ash, published on 1 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-82738 exists.\n\nAffected packages and fixed versions:\n- ash (Hex): affected from 3.6.3; fixed in 3.32.2\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-2026-82738/ (Markdown: https://insights.sbomify.com/CVE-2026-82738/index.md)","id":"CVE-2026-82738","markdown":"https://insights.sbomify.com/CVE-2026-82738/index.md","name":"CVE-2026-82738","record":{"aliases":["EEF-CVE-2026-82738","GHSA-7xfw-9jwm-9c4c"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Elixir Ash framework","requires_auth":"none","summary":"Attackers can permanently deny access to records by storing invalid UUIDs, causing persistent read failures in the Ash framework.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Improper Input Validation vulnerability in ash-project ash allows an attacker to persistently deny reads of a record by storing a non-version-7 UUID in an Ash.Type.UUIDv7 attribute.\n\nAsh.Type.UUIDv7.cast_input/2 accepts any well-formed UUID string, including non-version-7 UUIDs, and stores it as a 16-byte binary. On read, cast_stored/2 (lib/ash/type/uuid_v7.ex) routes the stored binary back through cast_input/2, which since an input-validation tightening in v3.6.3 matches only version-7 (and optionally version-4) 16-byte binaries and otherwise expects a 36-character string. A stored non-v7 16-byte binary matches neither clause and returns :error, so every later read of that record fails. An attacker able to set such an attribute poisons the row permanently. The fix decodes any 16-byte stored binary directly in cast_stored/2.\n\nThis issue affects ash: from 3.6.3 before 3.32.2.","ecosystems":["Hex"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Ash.Type.UUIDv7 accepts non-v7 UUIDs that then fail to load, causing persistent denial of service","id":"CVE-2026-82738","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Ash.Resource.Validation.Confirm leaks a confirmed field's stored value in the atomic mismatch error","id":"CVE-2026-82739"},"packages":[{"ecosystem":"Hex","fixed":["3.32.2"],"introduced":["3.6.3"],"last_affected":[],"package":"ash","purl":"pkg:hex/ash","source":"EEF-CVE-2026-82738"}],"prev":{"headline":"Ash.Vector wraps the 16-bit dimension header for vectors over 65,535 elements, corrupting data and crashing reads","id":"CVE-2026-82737"},"products":["ash"],"published":"2026-09-01","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Erlang Ecosystem Foundation","prefix":"EEF"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-01","vendors":["ash-project"]},"summary":"Attackers can permanently deny access to records by storing invalid UUIDs, causing persistent read failures in the Ash framework.","url":"https://insights.sbomify.com/CVE-2026-82738/"}