CVE-2021-23408

Name: CVE-2021-23408
Creator: NVD / NIST
Published: 2021-07-21T16:15:08.613+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 1.40%

Last modified Jun 17, 2026

CVE-2021-23408 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. This affects the package com.graphhopper:graphhopper-web-bundle before 3.2, from 4.0-pre1 and before 4.0. The URL parser could be tricked into adding or modifying properties of Object.prototype using a constructor or __proto__ payload.. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

Description

This affects the package com.graphhopper:graphhopper-web-bundle before 3.2, from 4.0-pre1 and before 4.0. The URL parser could be tricked into adding or modifying properties of Object.prototype using a constructor or __proto__ payload.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

1.40%

69.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions	Update
Graphhopper	Graphhopper	< 3.2	—
Graphhopper	Graphhopper	4.0	Pre1

References

https://github.com/graphhopper/graphhopper/pull/2370Patch, Third Party Advisory
https://github.com/graphhopper/graphhopper/releases/tag/3.1Release Notes, Third Party Advisory
https://github.com/graphhopper/graphhopper/releases/tag/3.2Release Notes, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-COMGRAPHHOPPER-1320114Exploit, Third Party Advisory
https://github.com/graphhopper/graphhopper/pull/2370Patch, Third Party Advisory
https://github.com/graphhopper/graphhopper/releases/tag/3.1Release Notes, Third Party Advisory
https://github.com/graphhopper/graphhopper/releases/tag/3.2Release Notes, Third Party Advisory
https://snyk.io/vuln/SNYK-JAVA-COMGRAPHHOPPER-1320114Exploit, Third Party Advisory

Timeline

Published: Jul 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23408?

How severe is CVE-2021-23408?

CVE-2021-23408 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23408?

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-2021-23408?

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

Scan your code now

Source: NVD / NIST