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CVE-2019-16676

30
FAUCET Score

CVE-2019-16676 is a critical incorrect access control vulnerability in Plataformatec Simple Form, specifically within the file_method? function in lib/simple_form/form_builder.rb, where user-supplied input is improperly executed as a method call. With a CVSS score of 9.8, this vulnerability allows unauthenticated attackers to achieve full compromise (confidentiality, integrity, and availability) with low attack complexity over the network. Despite its severity, there is currently no known active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.0CPE matchmatch criteria
cpe:2.3:a:plataformatec:simple_form:*:*:*:*:*:*:*:*

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
3.40%
Probability of exploitation in next 30 days
EPSS Percentile
87.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0340 is in the 80th percentile among its peer group of 36,862 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)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: simple_formFixed in: 5.0.0

Vendor Advisories (1)

rubygemsGHSA-r74q-gxcg-73hxcritical

Improper Input Validation in simple_form

Sep 30, 2019

References

blog.plataformatec.com.br / 2019/09/incorrect-access-control-in-simple-form-cve-2019-16676
ExploitVendor Advisory
github.com / plataformatec/simple_form/commits/master
PatchThird Party Advisory
github.com / plataformatec/simple_form/security/advisories/GHSA-r74q-gxcg-73hx
Third Party Advisory