CVE-2024-21550

Name: CVE-2024-21550
Creator: NVD / NIST
Published: 2024-08-12T15:15:19.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2024-21550 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. SteVe is an open platform that implements different version of the OCPP protocol for Electric Vehicle charge points, acting as a central server for management of registered charge points. Attackers can inject arbitrary HTML and Javascript code via WebSockets leading to persistent Cross-Site Scripting in the SteVe management interface.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

SteVe is an open platform that implements different version of the OCPP protocol for Electric Vehicle charge points, acting as a central server for management of registered charge points. Attackers can inject arbitrary HTML and Javascript code via WebSockets leading to persistent Cross-Site Scripting in the SteVe management interface.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.38%

29.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Steve-Community	Steve	<= 3.5.1
Steve-Community	Steve	3.6.0
Steve-Community	Steve	3.7.0

References

https://github.com/steve-community/steve/blob/steve-3.6.0/src/main/java/de/rwth/idsg/steve/config/WebSocketConfiguration.java#L69Product
https://github.com/steve-community/steve/commit/a79983f843c37705182c8f54eba060c1dce3b6d1Patch
https://github.com/steve-community/steve/issues/1526Issue Tracking, Patch
https://github.com/steve-community/steve/pull/1527Issue Tracking, Patch

Timeline

Published: Aug 12, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-21550?

How severe is CVE-2024-21550?

CVE-2024-21550 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21550?

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-2024-21550?

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

Scan your code now

Source: NVD / NIST