# CVE-2021-25013: Qubely < 1.7.8 - Subscriber+ Arbitrary Post Deletion

> Authenticated users can delete arbitrary posts due to missing authorization and CSRF checks in the Qubely WordPress plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jan 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-chxc-687f-jrfg

## What is CVE-2021-25013?

CVE-2021-25013 is a medium-severity missing authorization vulnerability in Unknown Qubely – Advanced Gutenberg Blocks, published on 24 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Qubely WordPress plugin before 1.7.8 does not have authorisation and CSRF check on the qubely_delete_saved_block AJAX action, and does not ensure that the block to be deleted belong to the plugin, as a result, any authenticated users, such as subscriber can delete arbitrary posts

Weakness: CWE-352 (Cross-Site Request Forgery), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2021-25013?

It affects 1 product.


Products: Themeum Qubely.

## How do I fix CVE-2021-25013?

No fix has been published for CVE-2021-25013 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-25013 being exploited?

There is no known exploitation of CVE-2021-25013 in the wild and no public exploit code.

## Other vulnerabilities in Unknown Qubely – Advanced Gutenberg Blocks

- [CVE-2021-24916](https://insights.sbomify.com/CVE-2021-24916/): Qubely < 1.8.6 - Unauthenticated Arbitrary E-mail Sending (high 7.5)
- [CVE-2025-26767](https://insights.sbomify.com/CVE-2025-26767/): WordPress Qubely plugin <= 1.8.12 - Cross Site Scripting (XSS) vulnerability (medium 6.5)
- [CVE-2024-9601](https://insights.sbomify.com/CVE-2024-9601/): Cross-site scripting in Qubely – Advanced Gutenberg Blocks (medium 6.5)
- [CVE-2023-0376](https://insights.sbomify.com/CVE-2023-0376/): Qubely < 1.8.5 - Contributor+ Stored XSS (medium 5.4)
- [CVE-2024-13228](https://insights.sbomify.com/CVE-2024-13228/): Information disclosure in Qubely – Advanced Gutenberg Blocks (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-25013 and fix it if it is affected.

What it is: CVE-2021-25013 is a medium-severity missing authorization vulnerability in Unknown Qubely – Advanced Gutenberg Blocks, published on 24 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-25013 in the wild and no public exploit code.

Affected product: Unknown Qubely – Advanced Gutenberg Blocks. 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-2021-25013/ (Markdown: https://insights.sbomify.com/CVE-2021-25013/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-25013
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-25013
- OSV: https://osv.dev/vulnerability/CVE-2021-25013

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-25013/
Summaries are generated and may contain mistakes; the official description above is the record.