# CVE-2021-24768: WP RSS Aggregator < 4.19.2 - Admin+ Stored Cross-Site Scripting

> High-privilege users can inject malicious HTML into the Blacklist URL field, leading to stored Cross-Site Scripting attacks.

- **Severity:** Medium 4.8 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Nov 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-4q83-54pp-rmxj

## What is CVE-2021-24768?

CVE-2021-24768 is a medium-severity cross-site scripting vulnerability in Unknown WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More, published on 29 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

The WP RSS Aggregator WordPress plugin before 4.19.2 does not properly sanitise and escape the URL to Blacklist field, allowing malicious HTML to be inserted by high privilege users even when the unfiltered_html capability is disallowed, which could lead to Cross-Site Scripting issues.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-24768?

It affects 1 product.


Products: Wprssaggregator Wp Rss Aggregator.

## How do I fix CVE-2021-24768?

No fix has been published for CVE-2021-24768 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24768 being exploited?

There is no known exploitation of CVE-2021-24768 in the wild and no public exploit code.

## Other vulnerabilities in Unknown WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More

- [CVE-2022-0189](https://insights.sbomify.com/CVE-2022-0189/): WP RSS Aggregator < 4.20 - Reflected Cross-Site Scripting (XSS) (medium 6.1)
- [CVE-2021-24988](https://insights.sbomify.com/CVE-2021-24988/): WP RSS Aggregator < 4.19.3 - Subscriber+ Stored Cross-Site Scripting (medium 5.4)
- [CVE-2024-0630](https://insights.sbomify.com/CVE-2024-0630/): WP RSS Aggregator <= 4.23.4 - Authenticated (Admin+) Stored Cross-Site Scripting via RSS Feed Source (medium 4.4)
- [CVE-2024-0628](https://insights.sbomify.com/CVE-2024-0628/): Server-side request forgery in WP RSS Aggregator – RSS Import, News Feeds, Feed to Post, and Autoblogging (low 3.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24768 and fix it if it is affected.

What it is: CVE-2021-24768 is a medium-severity cross-site scripting vulnerability in Unknown WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More, published on 29 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24768 in the wild and no public exploit code.

Affected product: Unknown WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More. 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-2021-24768/ (Markdown: https://insights.sbomify.com/CVE-2021-24768/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24768
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24768
- OSV: https://osv.dev/vulnerability/CVE-2021-24768

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24768/
Summaries are generated and may contain mistakes; the official description above is the record.