CVE-2026-82973 PUBLISHED

Improper Neutralization of CRLF Sequences ('CRLF Injection') in docker-mailbox

Assigner: GitLab
Reserved: 31.08.2026 Published: 29.09.2026 Updated: 29.09.2026

Improper neutralization of CRLF sequences in IMAP command construction in psyb0t/docker-mailbox before 0.4.13 allows a remote unauthenticated attacker, when bearer-token authentication is not configured, to inject additional IMAP commands into an authenticated upstream mailbox connection via crafted folder, UID, or search values.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
CVSS Score: 9.4

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	psyb0t
Product	docker-mailbox
Versions	Default: unaffected affected from 0.1.0 to 0.4.12 (incl.)

Solutions

Upgrade to version 0.4.13 or later.

Credits

Kietgboiz17 (@kietgboiz17, https://gitlab.com/kietgboiz17) finder

References

https://gitlab.com/psyb0t/docker-mailbox/-/commit/90e6b492d42e011d0ba2c825795b33d054ee6636

Problem Types

CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection') CWE