No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
Description
Allocation of Resources Without Limits or Throttling vulnerability in elixir-ecto ecto allows an unauthenticated remote attacker to exhaust memory in the application and in the database server by sending requests with distinct JSON keys or list lengths where the application interpolates them into json_extract_path/2, field[^key] or splice/1. Ecto caches prepared queries per repository in an ETS table with no size limit and no eviction. Interpolated JSON path elements become part of the query expression instead of its parameters, and splice/1 expands into one placeholder per element, so every distinct key or list length creates a new cache entry. With ecto_sql each entry is also a new prepared statement on the database connection that runs it. None of this memory is released until the processes restart. This issue affects ecto: from 3.4.0 before 3.14.3.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 04 Nov 2026
- Last modified upstream: 04 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://cna.erlef.org/cves/CVE-2026-118391.html
- https://ecto.hexdocs.pm/Ecto.Query.API.html#json_extract_path/2
- https://ecto.hexdocs.pm/Ecto.Query.API.html#splice/1
- https://github.com/elixir-ecto/ecto/commit/cb2f03964dac324a9771f84f5088e395326e6de8
- https://github.com/elixir-ecto/ecto/commit/d0e97d8a6e274c81c25fbf08087da8d8b9bae0ea
- https://github.com/elixir-ecto/ecto/commit/eb03f45b999e2bf67ffae92811233eb6e56dba55
- https://github.com/elixir-ecto/ecto/commit/eef014ad090d27d1a5b69c0e32a50eabd44ab3bb
- https://github.com/elixir-ecto/ecto/issues/1031
- https://github.com/elixir-ecto/ecto/issues/4470
- https://github.com/elixir-ecto/ecto/security/advisories/GHSA-cxjx-vmm2-qr8r
- https://osv.dev/vulnerability/EEF-CVE-2026-118391
- Analysis, summary and remediation
- © VulnCrest