# CVE-2022-40482: Information disclosure in n/a

> Attackers can enumerate valid users in Laravel applications via timing attacks exploiting early returns in authentication logic.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:** 25 Apr 2023
- **Updated:** 3 Feb 2025
- **Also known as:** GHSA-5qxg-5vwh-7j5j

## What is CVE-2022-40482?

CVE-2022-40482 is a medium-severity vulnerability in n/a, published on 25 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The authentication method in Laravel 8.x through 9.x before 9.32.0 was discovered to be vulnerable to user enumeration via timeless timing attacks with HTTP/2 multiplexing. This is caused by the early return inside the hasValidCredentials method in the Illuminate\Auth\SessionGuard class when a user is found to not exist.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2022-40482?

It affects 1 product.


Products: Laravel Framework.

## How do I fix CVE-2022-40482?

No fix has been published for CVE-2022-40482 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-40482 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40482 exists.

## Other vulnerabilities in n/a

- [CVE-2021-43617](https://insights.sbomify.com/CVE-2021-43617/): File upload in n/a (critical 9.8)
- [CVE-2020-19316](https://insights.sbomify.com/CVE-2020-19316/): OS Command Injection in Laravel Framework (high 8.8)
- [CVE-2018-6330](https://insights.sbomify.com/CVE-2018-6330/): SQL injection in n/a (high 8.8)
- [CVE-2024-13918](https://insights.sbomify.com/CVE-2024-13918/): Laravel Reflected XSS via Request Parameter in Debug-Mode Error Page (high 8.0)
- [CVE-2024-13919](https://insights.sbomify.com/CVE-2024-13919/): Laravel Reflected XSS via Route Parameter in Debug-Mode Error Page (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-40482 and fix it if it is affected.

What it is: CVE-2022-40482 is a medium-severity vulnerability in n/a, published on 25 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40482 exists.

Affected product: n/a. 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-2022-40482/ (Markdown: https://insights.sbomify.com/CVE-2022-40482/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-40482
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-40482
- OSV: https://osv.dev/vulnerability/CVE-2022-40482

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-40482/
Summaries are generated and may contain mistakes; the official description above is the record.