CVE-2026-82973 psyb0t/docker-mailbox - CRLF Injection

psyb0t/docker-mailbox < 0.4.13 contains a CRLF injection caused by improper neutralization of CRLF sequences in IMAP command construction, letting remote unauthenticated attackers inject additional IMAP commands via crafted folder, UID, or search values when bearer-token authentication is not configured.

CVSS base score 9.4 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.42% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
CRLF Injection
Impact
Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-93

Vendor fix

Update to version 0.4.13 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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