Plataformatec Simple Form has Incorrect Access Control in file_method? in…
Priority MEDIUM 48CWE-20Published · 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 · NVD. Fix status from CNA and GitHub.
Summary
Plataformatec Simple Form has Incorrect Access Control in file_method? in lib/simple_form/form_builder.rb, because a user-supplied string is invoked as a method call.
Why it matters now
EPSS 0.034 88th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed simple_form (RubyGems): 5.0.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | simple_form (RubyGems) | before 5.0.0 | 5.0.0 | Patch available | GHSA-r74q-gxcg-73hx |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- simple_form (RubyGems) Vendor— Affected before 5.0.0 Fixed in 5.0.0 Patch available GHSA-r74q-gxcg-73hx
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:plataformatec:simple_form:*:*:*:*:*:*:*:* | before 5.0 | Vulnerable | Plataformatec |
- cpe:2.3:a:plataformatec:simple_form:*:*:*:*:*:*:*:* Versions before 5.0 Vulnerable ·Plataformatec
Remediation
- Fix · GHSA-r74q-gxcg-73hx simple_form (RubyGems) Fixed in 5.0.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16676
- 2026-10-03 Alias added: GHSA-r74q-gxcg-73hx
References
Exploit 1
Advisory 3
Other 4
- https://github.com/heartcombo/simple_form/commit/8c91bd76a5052ddf3e3ab9fd8333f9aa7b2e2dd6
- https://github.com/heartcombo/simple_form
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/simple_form/CVE-2019-16676.yml
- http://blog.plataformatec.com.br/2019/09/incorrect-access-control-in-simple-form-cve-2019-16676
Sources
- CVE-2019-16676 · CVE Program
- CVE-2019-16676 · NVD
- FIRST EPSS
- GHSA-r74q-gxcg-73hx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences