CVE-2026-39755 WordPress WP Duplicate plugin <= 1.1.11 - Arbitrary File Upload vulnerability
Critical 9.9
Published
Updated
Check this codebase for CVE-2026-39755 and fix it if it is affected.
What it is: CVE-2026-39755 is a critical vulnerability in revmakx WP Duplicate, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-39755 in the wild and no public exploit code.
Affected product: revmakx WP Duplicate. 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-2026-39755/ (Markdown: https://insights.sbomify.com/CVE-2026-39755/index.md)
Subscribers can upload arbitrary files in the WP Duplicate WordPress plugin, potentially leading to remote code execution.
- 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-2026-39755?
CVE-2026-39755 is a critical vulnerability in revmakx WP Duplicate, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Subscriber Arbitrary File Upload in WP Duplicate <= 1.1.11 versions.
Weakness: CWE-434
Which versions are affected by CVE-2026-39755?
How do I fix CVE-2026-39755?
No fix has been published for CVE-2026-39755 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-39755 being exploited?
There is no known exploitation of CVE-2026-39755 in the wild and no public exploit code.
Sources
Also known as GHSA-c4hr-qwxf-4jw9.