CVE-2021-39133

Name: CVE-2021-39133
Creator: NVD / NIST
Published: 2021-08-30T20:15:07.73+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2021-39133 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, a user with `admin` access to the `system` resource type is potentially vulnerable to a CSRF attack that could cause the server to run untrusted code on all Rundeck editions. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

Rundeck is an open source automation service with a web console, command line tools and a WebAPI. Prior to version 3.3.14 and version 3.4.3, a user with `admin` access to the `system` resource type is potentially vulnerable to a CSRF attack that could cause the server to run untrusted code on all Rundeck editions. Patches are available in Rundeck versions 3.4.3 and 3.3.14.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

0.45%

36.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Pagerduty	Rundeck	< 3.3.14
Pagerduty	Rundeck	>= 3.4.0, < 3.4.3

References

https://github.com/rundeck/rundeck/commit/67c4eedeaf9509fc0b255aff15977a5229ef13b9Patch, Third Party Advisory
https://github.com/rundeck/rundeck/security/advisories/GHSA-3jmw-c69h-426cThird Party Advisory
https://github.com/rundeck/rundeck/commit/67c4eedeaf9509fc0b255aff15977a5229ef13b9Patch, Third Party Advisory
https://github.com/rundeck/rundeck/security/advisories/GHSA-3jmw-c69h-426cThird Party Advisory

Timeline

Published: Aug 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39133?

How severe is CVE-2021-39133?

CVE-2021-39133 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39133?

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-2021-39133?

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

Scan your code now

Source: NVD / NIST