CVE-2021-3799 Improper Restriction of Rendered UI Layers or Frames in getgrav/grav-plugin-admin
Medium 5.4
Published
Updated
Check this codebase for CVE-2021-3799 and fix it if it is affected.
What it is: CVE-2021-3799 is a medium-severity vulnerability in getgrav/grav-plugin-admin, published on 27 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-3799 in the wild and no public exploit code.
Affected product: getgrav/grav-plugin-admin. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2021-3799/ (Markdown: https://insights.sbomify.com/CVE-2021-3799/index.md)
Attackers can exploit improper UI layer restrictions in the Grav admin plugin to bypass security controls or perform clickjacking attacks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3799?
CVE-2021-3799 is a medium-severity vulnerability in getgrav/grav-plugin-admin, published on 27 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
grav-plugin-admin is vulnerable to Improper Restriction of Rendered UI Layers or Frames
Weakness: CWE-1021
Which versions are affected by CVE-2021-3799?
It affects 1 product.
Products include Getgrav Grav-Plugin-Admin.
How do I fix CVE-2021-3799?
No fix has been published for CVE-2021-3799 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-3799 being exploited?
There is no known exploitation of CVE-2021-3799 in the wild and no public exploit code.
Other vulnerabilities in getgrav/grav-plugin-admin
- CVE-2021-21425 Unauthenticated Arbitrary YAML Write/Update leads to Code Execution
- CVE-2025-66308 Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/config/site` parameter `data[taxonomies]`
- CVE-2025-66307 Grav Admin Plugin vulnerable to User Enumeration & Email Disclosure
- CVE-2025-66309 Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the "Blog Config" tab
- CVE-2025-66310 Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` parameter `data[header][template]` in Advanced Tab
Sources
Also known as GHSA-vxv9-wpm2-64cm.