# CVE-2021-44749: Universal Cross-Site Scripting Vulnerability in F-Secure SAFE Browser Protection for Android

> Universal cross-site scripting in F-Secure SAFE Browser allows arbitrary code execution via improper URL handling, requiring user interaction.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L`)
- **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:** 6 Mar 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-q4ff-m563-fvv4

## What is CVE-2021-44749?

CVE-2021-44749 is a medium-severity cross-site scripting vulnerability in F-Secure SAFE Browser for Android Version 18.5, published on 6 Mar 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability affecting F-Secure SAFE browser protection was discovered improper URL handling can be triggered to cause universal cross-site scripting through browsing protection in a SAFE web browser. User interaction is required prior to exploitation. A successful exploitation may lead to arbitrary code execution.

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

## Which versions are affected by CVE-2021-44749?

It affects 1 product.


Products: F-Secure Safe.

## How do I fix CVE-2021-44749?

No fix has been published for CVE-2021-44749 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-44749 being exploited?

There is no known exploitation of CVE-2021-44749 in the wild and no public exploit code.

## Other vulnerabilities in F-Secure SAFE Browser for Android Version 18.5

- [CVE-2020-14977](https://insights.sbomify.com/CVE-2020-14977/): Race condition in n/a (high 8.1)
- [CVE-2020-14978](https://insights.sbomify.com/CVE-2020-14978/): Privilege escalation in n/a (high 8.1)
- [CVE-2022-38164](https://insights.sbomify.com/CVE-2022-38164/): Security feature bypass in n/a (medium 6.5)
- [CVE-2021-44748](https://insights.sbomify.com/CVE-2021-44748/): Universal Cross-Site Scripting Vulnerability in F-Secure SAFE Browser for Android (medium 5.5)
- [CVE-2022-47524](https://insights.sbomify.com/CVE-2022-47524/): Other in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-44749 and fix it if it is affected.

What it is: CVE-2021-44749 is a medium-severity cross-site scripting vulnerability in F-Secure SAFE Browser for Android Version 18.5, published on 6 Mar 2022. 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-2021-44749 in the wild and no public exploit code.

Affected product: F-Secure SAFE Browser for Android Version 18.5. 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-2021-44749/ (Markdown: https://insights.sbomify.com/CVE-2021-44749/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-44749
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-44749
- OSV: https://osv.dev/vulnerability/CVE-2021-44749

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-44749/
Summaries are generated and may contain mistakes; the official description above is the record.