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CVE-2017-20166

30
FAUCET Score

CVE-2017-20166 describes a critical vulnerability in Ecto version 2.2.0, stemming from a missing protection mechanism related to the interaction between 'is_nil' and 'raise' functions. With a CVSS score of 9.8, this vulnerability is highly severe, allowing unauthenticated attackers to achieve complete compromise of confidentiality, integrity, and availability over a network with low attack complexity. Despite its critical nature, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.2.0CPE matchmatch criteria
cpe:2.3:a:ecto_project:ecto:2.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.28%
Probability of exploitation in next 30 days
EPSS Percentile
67.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0128 is in the 53rd percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

erlangpatch availablevia ghsa
Product: ectoFixed in: 2.2.1
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

erlangGHSA-2xxx-fhc8-9qvqcritical

Ecto missing `is_nil` requirement

Apr 12, 2022

References

github.com / advisories/GHSA-2xxx-fhc8-9qvq
Third Party Advisory
github.com / elixir-ecto/ecto/commit/db55b0cba6525c24ebddc88ef9ae0c1c00620250
PatchThird Party Advisory
github.com / elixir-ecto/ecto/pull/2125
ExploitThird Party Advisory
groups.google.com / forum