# CVE-2021-24988: WP RSS Aggregator < 4.19.3 - Subscriber+ Stored Cross-Site Scripting

> Authenticated subscribers can inject malicious scripts via the addon parameter in the System Info dashboard due to missing sanitization and authorization checks.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 27 Dec 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-gp23-wr4g-cj6r

## What is CVE-2021-24988?

CVE-2021-24988 is a medium-severity cross-site scripting vulnerability in Unknown WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More, published on 27 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The WP RSS Aggregator WordPress plugin before 4.19.3 does not sanitise and escape data before outputting it in the System Info admin dashboard, which could lead to a Stored XSS issue due to the wprss_dismiss_addon_notice AJAX action missing authorisation and CSRF checks, allowing any authenticated users, such as subscriber to call it and set a malicious payload in the addon parameter.

Weakness: CWE-862 (Missing Authorization), CWE-352 (Cross-Site Request Forgery), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-24988?

It affects 1 product.


Products: Wprssaggregator Wp Rss Aggregator.

## How do I fix CVE-2021-24988?

No fix has been published for CVE-2021-24988 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24988 being exploited?

There is no known exploitation of CVE-2021-24988 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-2021-24768](https://insights.sbomify.com/CVE-2021-24768/): WP RSS Aggregator < 4.19.2 - Admin+ Stored Cross-Site Scripting (medium 4.8)
- [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-2021-24988 and fix it if it is affected.

What it is: CVE-2021-24988 is a medium-severity cross-site scripting vulnerability in Unknown WP RSS Aggregator – News Feeds, Autoblogging, Youtube Video Feeds and More, published on 27 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-24988 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-2021-24988/ (Markdown: https://insights.sbomify.com/CVE-2021-24988/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24988
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24988
- OSV: https://osv.dev/vulnerability/CVE-2021-24988

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-24988/
Summaries are generated and may contain mistakes; the official description above is the record.