Mbsync is a command-line mail-synchronization utility that operates as a local client for bidirectional IMAP synchronization, with a narrow but specialized deployment footprint. Its observed vulnerability surface centers on input-validation and path-traversal weaknesses, reflecting the parser and file-system interaction demands inherent to a mail-sync application. Current severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Mbsync Project over time
Signals from CVEs in this vendor scope (1 CVEs).
1 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2021-20247HIGH A flaw was found in mbsync before v1.3.5 and v1.4.1. Validations of the mailbox names returned by IMAP LIST/LSUB do not occur allowing a malicious or compromised server to use spec | Feb 23, 2021 | 7.4 | 25 | NO | NO |
Signals from CVEs in this vendor scope (1 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Mbsync Project.
Media articles that mention a CVE ID that affects a product developed by Mbsync Project — matched by CVE ID, not by vendor name.