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

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

Which versions are affected by CVE-2019-25613?

It affects 1 product.

Products include 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.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

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 Memory corruption in n/a Critical 9.8
• CVE-2018-25221 EChat Server 3.1 Buffer Overflow via chat.ghp username Parameter Critical 9.3
• CVE-2022-44939 Other in n/a High 7.8
• CVE-2019-20502 Memory corruption in n/a High 7.5
• CVE-2017-9543 Auth bypass in n/a High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-phg5-3h7x-599v.