CVE-2019-25613: Easy Chat Server 3.1 contains a denial of service vulnerability that allows remote attackers to crash the appl

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2019-25613 is a high-severity flaw (CVSS 7.5) affecting easy chat server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-940
Published	2026-03-22
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: echatserver

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-22 14:16 UTCPublished CVE record published
2026-06-17 02:32 UTCUpdated Record last modified

echatserver easy chat server DOWNGRADE

Affected: 3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1

1. Check installed version

apt-cache policy easy-chat-server || rpm -q easy-chat-server || easy-chat-server --version

2. No fixed release: DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison easy-chat-server sudo apt install easy-chat-server=<VERSION_BEFORE_3.1> sudo apt-mark hold easy-chat-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list easy-chat-server sudo dnf downgrade easy-chat-server-<VERSION_BEFORE_3.1> sudo dnf versionlock add easy-chat-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-25613?

easy chat server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-25613 being exploited?

CVE-2019-25613 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-25613 affect?

CVE-2019-25613 affects easy chat server. Severity is high (CVSS 7.5). 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 s

How urgent is CVE-2019-25613?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-25221 CRITICAL 9.8 UPGRADE EChat Server 3.1 contains a buffer overflow vulnerability in the chat.ghp endpoint that allows remote attacker

References

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