CVE-2026-15413 Link Factory - Backdoor
Critical 10.0
Published
Updated
Check this codebase for CVE-2026-15413 and fix it if it is affected.
What it is: CVE-2026-15413 is a critical vulnerability in Unknown Link Factory, published on 13 Aug 2026.
Exploitation: There is no known exploitation of CVE-2026-15413 in the wild and no public exploit code.
Affected product: Unknown Link Factory. 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-2026-15413/ (Markdown: https://insights.sbomify.com/CVE-2026-15413/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-15413?
CVE-2026-15413 is a critical vulnerability in Unknown Link Factory, published on 13 Aug 2026.
Official description
The Link Factory WordPress plugin is a backdoor. Distributed as a "homepage sentence publisher", it exposes an operator-controlled REST API under /wp-json/link-factory/v1/ - authenticated by a detached Ed25519 signature verified against a hardcoded operator public key (except for the health check).
Weakness: CWE-912
Which versions are affected by CVE-2026-15413?
How do I fix CVE-2026-15413?
No fix has been published for CVE-2026-15413 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15413 being exploited?
There is no known exploitation of CVE-2026-15413 in the wild and no public exploit code.
Sources
Also known as GHSA-p2hj-vx9x-4rh8.