CVE-2021-37601

Name: CVE-2021-37601
Creator: NVD / NIST
Published: 2021-07-30T14:15:18.767+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.33%

Last modified Jun 17, 2026

CVE-2021-37601 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive information (list of admins, members, owners, and banned entities of a Multi-User chat room) in some common configurations.. EPSS estimates a 2.33% chance of exploitation in the next 30 days.

Description

muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive information (list of admins, members, owners, and banned entities of a Multi-User chat room) in some common configurations.

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

2.33%

81.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Prosody	Prosody	>= 0.11.0, <= 0.11.9

References

http://www.openwall.com/lists/oss-security/2021/07/28/4Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BZRRPCNOETB4MN4XSYPRBBKDIHO27DY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EMKIOEP2CYWHVVUCNWISPE4AGH4IR7O2/
https://prosody.im/Exploit, Product
https://prosody.im/security/advisory_20210722/Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/07/28/4Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7BZRRPCNOETB4MN4XSYPRBBKDIHO27DY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EMKIOEP2CYWHVVUCNWISPE4AGH4IR7O2/
https://prosody.im/Exploit, Product
https://prosody.im/security/advisory_20210722/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-37601?

How severe is CVE-2021-37601?

CVE-2021-37601 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.33% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37601?

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-2021-37601?

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

Scan your code now

Source: NVD / NIST