CVE-2021-1630

Name: CVE-2021-1630
Creator: NVD / NIST
Published: 2021-08-05T21:15:10.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2021-1630 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. XML external entity (XXE) vulnerability affecting certain versions of a Mule runtime component that may affect CloudHub, GovCloud, Runtime Fabric, Pivotal Cloud Foundry, Private Cloud Edition, and on-premise customers.. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

XML external entity (XXE) vulnerability affecting certain versions of a Mule runtime component that may affect CloudHub, GovCloud, Runtime Fabric, Pivotal Cloud Foundry, Private Cloud Edition, and on-premise customers.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.07%

60.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-611

Affected Software

Vendor	Product	Versions
Salesforce	Mule	>= 3.0.0, < 4.3.0

References

https://help.salesforce.com/articleView?id=000362693&type=1&mode=1Vendor Advisory
https://help.salesforce.com/articleView?id=000362693&type=1&mode=1Vendor Advisory

Timeline

Published: Aug 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-1630?

How severe is CVE-2021-1630?

CVE-2021-1630 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2021-1630?

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-2021-1630?

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

Scan your code now

Source: NVD / NIST