# CVE-2026-33656: Path traversal in espocrm

> An authenticated admin can exploit path traversal in attachment sourceId to achieve remote code execution or arbitrary file access.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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:** No
- **Published:** 22 Apr 2026
- **Updated:** 23 Apr 2026
- **Also known as:** GHSA-7922-x7cf-j54x

## What is CVE-2026-33656?

CVE-2026-33656 is a critical path traversal vulnerability in espocrm, published on 22 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

EspoCRM is an open source customer relationship management application. Prior to version 9.3.4, EspoCRM's built-in formula scripting engine allowing updating attachment's sourceId thus allowing an authenticated admin to overwrite the `sourceId` field on `Attachment` entities. Because `sourceId` is concatenated directly into a file path with no sanitization in `EspoUploadDir::getFilePath()`, an attacker can redirect any file read or write operation to an arbitrary path within the web server's `open_basedir` scope. Version 9.3.4 fixes the issue.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-33656?

It affects 1 product.


Products: Espocrm Espocrm.

## How do I fix CVE-2026-33656?

No fix has been published for CVE-2026-33656 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33656 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33656 exists.

Public exploit code:

- Formula for Disaster: RCE in EspoCRM v9.3.3 (CVE-2026-33656) (github_poc): https://github.com/JivaSecurity/ESPOCRM-RCE-POC-CVE-2026-33656

## Other vulnerabilities in espocrm

- [CVE-2014-7985](https://insights.sbomify.com/CVE-2014-7985/): Path traversal in n/a (critical 10.0)
- [CVE-2022-38843](https://insights.sbomify.com/CVE-2022-38843/): File upload in n/a (high 8.8)
- [CVE-2019-14351](https://insights.sbomify.com/CVE-2019-14351/): Information disclosure in n/a (high 8.8)
- [CVE-2020-37094](https://insights.sbomify.com/CVE-2020-37094/): EspoCRM 5.7.0 < 5.9.0 - Two-Factor Authentication Bypass via Auth Token Reuse Between Accounts with Identical Passwords (high 8.6)
- [CVE-2022-38844](https://insights.sbomify.com/CVE-2022-38844/): Code injection in n/a (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33656 and fix it if it is affected.

What it is: CVE-2026-33656 is a critical path traversal vulnerability in espocrm, published on 22 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33656 exists.

Affected product: espocrm. 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-2026-33656/ (Markdown: https://insights.sbomify.com/CVE-2026-33656/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33656
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33656
- OSV: https://osv.dev/vulnerability/CVE-2026-33656

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33656/
Summaries are generated and may contain mistakes; the official description above is the record.