# CVE-2021-34628: Admin Custom Login <= 3.2.7 - Cross-Site Request Forgery to Stored Cross-Site Scripting

> Attackers can exploit CSRF to inject arbitrary scripts via the login background setting, leading to stored XSS and potential site compromise.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 2 Aug 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-gf2x-66p8-8rpf

## What is CVE-2021-34628?

CVE-2021-34628 is a high-severity vulnerability in Weblizar Admin Custom Login, published on 2 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The Admin Custom Login WordPress plugin is vulnerable to Cross-Site Request Forgery due to the loginbgSave action found in the ~/includes/Login-form-setting/Login-form-background.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.2.7.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2021-34628?

It affects 1 product.


Products: Weblizar Admin Custom Login.

## How do I fix CVE-2021-34628?

No fix has been published for CVE-2021-34628 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34628 being exploited?

There is no known exploitation of CVE-2021-34628 in the wild and no public exploit code.

## Other vulnerabilities in Weblizar Admin Custom Login

- [CVE-2017-20098](https://insights.sbomify.com/CVE-2017-20098/): Admin Custom Login Plugin Persistent cross site scripting (low 3.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34628 and fix it if it is affected.

What it is: CVE-2021-34628 is a high-severity vulnerability in Weblizar Admin Custom Login, published on 2 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-34628 in the wild and no public exploit code.

Affected product: Weblizar Admin Custom Login. 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-2021-34628/ (Markdown: https://insights.sbomify.com/CVE-2021-34628/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34628
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34628
- OSV: https://osv.dev/vulnerability/CVE-2021-34628

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-34628/
Summaries are generated and may contain mistakes; the official description above is the record.