EEF-CVE-2026-82738
- Source
- https://cna.erlef.org/osv/EEF-CVE-2026-82738.html
- Import Source
- https://cna.erlef.org/osv/EEF-CVE-2026-82738.json
- JSON Data
- https://api.osv.dev/v1/vulns/EEF-CVE-2026-82738
- Aliases
-
- CVE-2026-82738
- GHSA-7xfw-9jwm-9c4c
- Published
- 2026-09-01T03:26:23.035Z
- Modified
- 2026-09-01T03:40:37.873739867Z
- Severity
-
- 5.9 (Medium) CVSS_V4 - 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 CVSS Calculator
- Summary
- Ash.Type.UUIDv7 accepts non-v7 UUIDs that then fail to load, causing persistent denial of service
- Details
-
Summary
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.
Ash.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.
This issue affects ash: from 3.6.3 before 3.32.2.
- Database specific
{ "cwe_ids": [ "CWE-20" ], "capec_ids": [ "CAPEC-153" ], "cpe_ids": [ "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*" ] }- References
- Credits
-
-
- Jonatan Männchen / EEF - COORDINATOR
-
- Zach Daniel / Ash Project - REMEDIATION_DEVELOPER
-
- Peter Ullrich - REPORTER
-
- Peter Ullrich - FINDER
-
Affected packages
Hex / ash
Package
- Name
- ash
- Purl
- pkg:hex/ash