CVE-2021-32832

Name: CVE-2021-32832
Creator: NVD / NIST
Published: 2021-08-30T21:15:09.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.62%

Last modified Jun 17, 2026

CVE-2021-32832 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Rocket.Chat is an open-source fully customizable communications platform developed in JavaScript. In Rocket.Chat before versions 3.11.3, 3.12.2, and 3.13 an issue with certain regular expressions could lead potentially to Denial of Service. EPSS estimates a 1.62% chance of exploitation in the next 30 days.

Description

Rocket.Chat is an open-source fully customizable communications platform developed in JavaScript. In Rocket.Chat before versions 3.11.3, 3.12.2, and 3.13 an issue with certain regular expressions could lead potentially to Denial of Service. This was fixed in versions 3.11.3, 3.12.2, and 3.13.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.62%

73.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Rocket.Chat	Rocket.Chat	< 3.11.3
Rocket.Chat	Rocket.Chat	>= 3.12.0, < 3.12.2

References

https://docs.rocket.chat/guides/security/security-updatesVendor Advisory
https://github.com/RocketChat/Rocket.Chat/commit/4a0dce973e37ec3f56ca2231d6030511dbdd094cPatch, Third Party Advisory
https://github.com/RocketChat/Rocket.Chat/releases/tag/3.11.3Release Notes, Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-310-redos-Rocket.Chat/Exploit, Third Party Advisory
https://docs.rocket.chat/guides/security/security-updatesVendor Advisory
https://github.com/RocketChat/Rocket.Chat/commit/4a0dce973e37ec3f56ca2231d6030511dbdd094cPatch, Third Party Advisory
https://github.com/RocketChat/Rocket.Chat/releases/tag/3.11.3Release Notes, Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-310-redos-Rocket.Chat/Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-32832?

How severe is CVE-2021-32832?

CVE-2021-32832 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.62% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32832?

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-2021-32832?

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

Scan your code now

Source: NVD / NIST