CVE-2019-18954

Name: CVE-2019-18954
Creator: NVD / NIST
Published: 2019-11-14T00:15:11.017+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.16%

Last modified Jun 17, 2026

CVE-2019-18954 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. EPSS estimates a 1.16% chance of exploitation in the next 30 days.

Description

Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in template/game-server/app/servers/connector/handler/entryHandler.js because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

1.16%

63.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Netease	Pomelo	2.2.5

References

https://github.com/NetEase/pomelo/issues/1149Issue Tracking, Third Party Advisory
https://github.com/cl0udz/vulnerabilities/tree/master/pomelo-critical-state-manipulationExploit, Third Party Advisory
https://github.com/NetEase/pomelo/issues/1149Issue Tracking, Third Party Advisory
https://github.com/cl0udz/vulnerabilities/tree/master/pomelo-critical-state-manipulationExploit, Third Party Advisory

Timeline

Published: Nov 14, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-18954?

How severe is CVE-2019-18954?

CVE-2019-18954 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.16% probability of exploitation in the next 30 days.

How do I fix CVE-2019-18954?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-18954?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST