# CVE-2019-13643: Cross-site scripting in n/a

> Remote attackers can execute malicious JavaScript via stored XSS in EspoCRM stream messages, potentially leading to account takeover.

- **Severity:** Medium 6.1 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-wmcm-5h3j-97jg

## What is CVE-2019-13643?

CVE-2019-13643 is a medium-severity cross-site scripting vulnerability in n/a, published on 18 Jul 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Stored XSS in EspoCRM before 5.6.4 allows remote attackers to execute malicious JavaScript and inject arbitrary source code into the target pages. The attack begins by storing a new stream message containing an XSS payload. The stored payload can then be triggered by clicking a malicious link on the Notifications page.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-13643?

It affects 1 product.


Products: Espocrm Espocrm.

## How do I fix CVE-2019-13643?

No fix has been published for CVE-2019-13643 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-13643 being exploited?

There is no known exploitation of CVE-2019-13643 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2014-7985](https://insights.sbomify.com/CVE-2014-7985/): Path traversal in n/a (critical 10.0)
- [CVE-2026-33656](https://insights.sbomify.com/CVE-2026-33656/): Path traversal in espocrm (critical 9.1)
- [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)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13643 and fix it if it is affected.

What it is: CVE-2019-13643 is a medium-severity cross-site scripting vulnerability in n/a, published on 18 Jul 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-13643 in the wild and no public exploit code.

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-2019-13643/ (Markdown: https://insights.sbomify.com/CVE-2019-13643/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13643
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13643
- OSV: https://osv.dev/vulnerability/CVE-2019-13643

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13643/
Summaries are generated and may contain mistakes; the official description above is the record.