CVE-2022-31138

Public Exploit
OS Command Injection in mailcow

Description

mailcow is a mailserver suite. Prior to mailcow-dockerized version 2022-06a, an extended privilege vulnerability can be exploited by manipulating the custom parameters regexmess, skipmess, regexflag, delete2foldersonly, delete2foldersbutnot, regextrans2, pipemess, or maxlinelengthcmd to execute arbitrary code. Users should update their mailcow instances with the `update.sh` script in the mailcow root directory to 2022-06a or newer to receive a patch for this issue. As a temporary workaround, the Syncjob ACL can be removed from all mailbox users, preventing changes to those settings.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.81% Top 20%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: mailcow mailcow-dockerized
Published at:
Updated at:

References

Link Tags
https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-vx9w-h33p-5vhc mitigation third party advisory
https://github.com/mailcow/mailcow-dockerized/commit/d373164e13a14e058f82c9f1918a5612f375a9f9 third party advisory patch
https://github.com/ly1g3/Mailcow-CVE-2022-31138 third party advisory exploit
https://github.com/mailcow/mailcow-dockerized/releases/tag/2022-06a third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2022-31138?
CVE-2022-31138 has been scored as a high severity vulnerability.
How to fix CVE-2022-31138?
To fix CVE-2022-31138, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-31138 being actively exploited in the wild?
It is possible that CVE-2022-31138 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-31138?
CVE-2022-31138 affects mailcow mailcow-dockerized.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.