# CVE-2019-8116: Auth bypass in Magento 2

> An unauthenticated attacker can hijack guest sessions to access customer account pages, requiring an upgrade to secure the platform.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:** 5 Nov 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-jc3q-vcfv-w99c

## What is CVE-2019-8116?

CVE-2019-8116 is a high-severity authentication bypass vulnerability in Magento Magento, published on 5 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Insecure authentication and session management vulnerability exists in Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An unauthenticated user can leverage a guest session id value following a successful login to gain access to customer account index page.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2019-8116?

It affects 1 product.


Products: Magento Magento.

## How do I fix CVE-2019-8116?

No fix has been published for CVE-2019-8116 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-8116 being exploited?

There is no known exploitation of CVE-2019-8116 in the wild and no public exploit code.

## Other vulnerabilities in Magento Magento

- [CVE-2020-9664](https://insights.sbomify.com/CVE-2020-9664/): Magento php object injection vulnerability (critical 9.8)
- [CVE-2020-9576](https://insights.sbomify.com/CVE-2020-9576/): Magento command injection vulnerability (critical 9.8)
- [CVE-2020-9578](https://insights.sbomify.com/CVE-2020-9578/): Magento command injection vulnerability (critical 9.8)
- [CVE-2020-9579](https://insights.sbomify.com/CVE-2020-9579/): Magento Security mitigation bypass vulnerability (critical 9.8)
- [CVE-2020-9580](https://insights.sbomify.com/CVE-2020-9580/): Magento Security mitigation bypass vulnerability (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-8116 and fix it if it is affected.

What it is: CVE-2019-8116 is a high-severity authentication bypass vulnerability in Magento Magento, published on 5 Nov 2019. 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-2019-8116 in the wild and no public exploit code.

Affected product: Magento Magento. 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-2019-8116/ (Markdown: https://insights.sbomify.com/CVE-2019-8116/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-8116
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-8116
- OSV: https://osv.dev/vulnerability/CVE-2019-8116

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-8116/
Summaries are generated and may contain mistakes; the official description above is the record.