# CVE-2025-54145: Scanning a malicious URL utilizing Firefox's open-text scheme with the QR code scanner could load arbitrary websites

> Attackers can trick users into scanning malicious QR codes to load arbitrary websites via Firefox's open-text scheme, bypassing intended navigation restrictions.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Aug 2025
- **Updated:** 13 Apr 2026
- **Also known as:** GHSA-3879-gmgh-p53r

## What is CVE-2025-54145?

CVE-2025-54145 is a critical vulnerability in Mozilla Firefox, published on 19 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The QR scanner could allow arbitrary websites to be opened if a user was tricked into scanning a malicious link that leveraged Firefox's open-text URL scheme. This vulnerability was fixed in Firefox for iOS 141.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2025-54145?

It affects 1 product.


Products: Mozilla Firefox.

## How do I fix CVE-2025-54145?

No fix has been published for CVE-2025-54145 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-54145 being exploited?

There is no known exploitation of CVE-2025-54145 in the wild and no public exploit code.

## Other vulnerabilities in Mozilla Firefox

- [CVE-2019-11708](https://insights.sbomify.com/CVE-2019-11708/): Mozilla Firefox and Thunderbird Sandbox Escape (critical 10.0, exploited in the wild)
- [CVE-2010-3765](https://insights.sbomify.com/CVE-2010-3765/): Mozilla Multiple Products Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2022-26486](https://insights.sbomify.com/CVE-2022-26486/): Mozilla Firefox Use-After-Free (critical 9.6, exploited in the wild)
- [CVE-2022-26485](https://insights.sbomify.com/CVE-2022-26485/): Mozilla Firefox Use-After-Free (high 8.8, exploited in the wild)
- [CVE-2019-11707](https://insights.sbomify.com/CVE-2019-11707/): Mozilla Firefox and Thunderbird Type Confusion (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-54145 and fix it if it is affected.

What it is: CVE-2025-54145 is a critical vulnerability in Mozilla Firefox, published on 19 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-54145 in the wild and no public exploit code.

Affected product: Mozilla Firefox. 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-2025-54145/ (Markdown: https://insights.sbomify.com/CVE-2025-54145/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-54145
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-54145
- OSV: https://osv.dev/vulnerability/CVE-2025-54145

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-54145/
Summaries are generated and may contain mistakes; the official description above is the record.