# CVE-2022-25277: Drupal core arbitrary PHP code execution

> Attackers can upload malicious .htaccess files to bypass protections and achieve remote code execution if file fields are explicitly configured to allow this extension.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Apr 2023
- **Updated:** 3 Feb 2025
- **Also known as:** BIT-drupal-2022-25277, DRUPAL-CORE-2022-014, GHSA-6955-67hm-vjjq, UBUNTU-CVE-2022-25277

## What is CVE-2022-25277?

CVE-2022-25277 is a high-severity vulnerability in Drupal Drupal, published on 26 Apr 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Drupal core sanitizes filenames with dangerous extensions upon upload (reference: SA-CORE-2020-012) and strips leading and trailing dots from filenames to prevent uploading server configuration files (reference: SA-CORE-2019-010). However, the protections for these two vulnerabilities previously did not work correctly together. As a result, if the site were configured to allow the upload of files with an htaccess extension, these files' filenames would not be properly sanitized. This could allow bypassing the protections provided by Drupal core's default .htaccess files and possible remote code execution on Apache web servers. This issue is mitigated by the fact that it requires a field administrator to explicitly configure a file field to allow htaccess as an extension (a restricted permission), or a contributed module or custom code that overrides allowed file uploads.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2022-25277?

6 open source packages ship an affected version, including drupal/core and drupal. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/core` | Packagist | From 8.0.0 | 9.3.19, 9.4.3 |
| `drupal/core` | Packagist | From 8.0.0 | 9.3.19 |
| `drupal/core` | Packagist | From 8.0.0 | 9.3.19 |
| `drupal/core` | Packagist | From 9.4.0 | 9.4.3 |
| `drupal/core` | Packagist | From 9.4.0 | 9.4.3 |
| `drupal` | Bitnami | From 8.0.0 | 9.3.19, 9.4.3 |

Products: Drupal Drupal.

## How do I fix CVE-2022-25277?

Upgrade drupal/core to a fixed version for your release line: 9.3.19 or 9.4.3.

## Is CVE-2022-25277 being exploited?

There is no known exploitation of CVE-2022-25277 in the wild and no public exploit code.

## Other vulnerabilities in Drupal Drupal

- [CVE-2026-9082](https://insights.sbomify.com/CVE-2026-9082/): Drupal Core SQL Injection (critical 9.8, exploited in the wild)
- [CVE-2020-13671](https://insights.sbomify.com/CVE-2020-13671/): Drupal core Un-restricted Upload of File (high 8.8, exploited in the wild)
- [CVE-2019-6340](https://insights.sbomify.com/CVE-2019-6340/): Drupal Core Remote Code Execution (high 8.1, exploited in the wild)
- [CVE-2009-3352](https://insights.sbomify.com/CVE-2009-3352/): Other in n/a (critical 10.0)
- [CVE-2024-55636](https://insights.sbomify.com/CVE-2024-55636/): Drupal core - Less critical - Gadget chain - SA-CORE-2024-006 (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-25277 and fix it if it is affected.

What it is: CVE-2022-25277 is a high-severity vulnerability in Drupal Drupal, published on 26 Apr 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-25277 in the wild and no public exploit code.

Affected packages and fixed versions:
- drupal/core (Packagist): affected from 8.0.0; fixed in 9.3.19, 9.4.3
- drupal/core (Packagist): affected from 8.0.0; fixed in 9.3.19
- drupal/core (Packagist): affected from 8.0.0; fixed in 9.3.19
- drupal/core (Packagist): affected from 9.4.0; fixed in 9.4.3
- drupal/core (Packagist): affected from 9.4.0; fixed in 9.4.3
- drupal (Bitnami): affected from 8.0.0; fixed in 9.3.19, 9.4.3

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-2022-25277/ (Markdown: https://insights.sbomify.com/CVE-2022-25277/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-25277
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-25277
- OSV: https://osv.dev/vulnerability/CVE-2022-25277

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-25277/
Summaries are generated and may contain mistakes; the official description above is the record.