Ecto 2.2.0 lacks a certain protection mechanism associated with the interaction between is_nil and raise.
Priority HIGH 82CWE-754Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
Ecto 2.2.0 lacks a certain protection mechanism associated with the interaction between is_nil and raise.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01316 70th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed ecto (Hex): 2.2.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | ecto (Hex) | 2.2.0 to before 2.2.1 | 2.2.1 | Patch available | GHSA-2xxx-fhc8-9qvq |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- ecto (Hex) Vendor— Affected 2.2.0 to before 2.2.1 Fixed in 2.2.1 Patch available GHSA-2xxx-fhc8-9qvq
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ecto_project:ecto:2.2.0:*:*:*:*:*:*:* | 2.2.0 | Vulnerable | Ecto Project |
- cpe:2.3:a:ecto_project:ecto:2.2.0:*:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Ecto Project
Remediation
- Fix · GHSA-2xxx-fhc8-9qvq ecto (Hex) Fixed in 2.2.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2017-20166
- 2026-10-03 Alias added: GHSA-2xxx-fhc8-9qvq
References
Advisory 2
Sources
- CVE-2017-20166 · CVE Program
- CVE-2017-20166 · NVD
- FIRST EPSS
- GHSA-2xxx-fhc8-9qvq · GitHub Advisory Database · CC BY 4.0
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