# CVE-2019-25613: Easy Chat Server 3.1 Denial of Service via message Parameter

> Remote attackers can crash Easy Chat Server by sending oversized data in the message parameter, causing a denial of service.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Mar 2026
- **Updated:** 23 Mar 2026
- **Also known as:** GHSA-phg5-3h7x-599v

## What is CVE-2019-25613?

CVE-2019-25613 is a high-severity denial of service vulnerability in Echatserver Easy Chat, published on 22 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the application by sending oversized data in the message parameter. Attackers can establish a session via the chat.ghp endpoint and then send a POST request to body2.ghp with an excessively large message parameter value to cause the service to crash.

Weakness: CWE-940 (Improper Verification of Source of a Communication Channel)

## Which versions are affected by CVE-2019-25613?

It affects 1 product.


Products: Echatserver Easy Chat Server.

## How do I fix CVE-2019-25613?

No fix has been published for CVE-2019-25613 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-25613 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25613 exists.

## Other vulnerabilities in Echatserver Easy Chat

- [CVE-2017-9544](https://insights.sbomify.com/CVE-2017-9544/): Memory corruption in n/a (critical 9.8)
- [CVE-2018-25221](https://insights.sbomify.com/CVE-2018-25221/): EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter (critical 9.3)
- [CVE-2022-44939](https://insights.sbomify.com/CVE-2022-44939/): Other in n/a (high 7.8)
- [CVE-2019-20502](https://insights.sbomify.com/CVE-2019-20502/): Memory corruption in n/a (high 7.5)
- [CVE-2017-9543](https://insights.sbomify.com/CVE-2017-9543/): Auth bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-25613 and fix it if it is affected.

What it is: CVE-2019-25613 is a high-severity denial of service vulnerability in Echatserver Easy Chat, published on 22 Mar 2026. 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-2019-25613 exists.

Affected product: Echatserver Easy Chat. 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-2019-25613/ (Markdown: https://insights.sbomify.com/CVE-2019-25613/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-25613
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-25613
- OSV: https://osv.dev/vulnerability/CVE-2019-25613

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-25613/
Summaries are generated and may contain mistakes; the official description above is the record.