Vulnerability DatabaseCVE-2026-49939
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CVE-2026-49939
Published:November 06, 2026
Updated:November 09, 2026
In Apache James server prior version 3.9.1 improper Access Control List processing is exposed by the JMAP protocol which do not account for negative rules positionned by IMAP protocol. This results in users being able to administer folders in JMAP despite having being explicitly denied the right to do so in IMAP. Users are recommended to upgrade to version 3.9.1 which fixes this issue.
Affected Packages
https://github.com/apache/james-project.git (GITHUB):
Affected version(s) =james-project-3.9.0 <james-project-3.9.1
Fix Suggestion:
Update to version james-project-3.9.1
org.apache.james:apache-james-mailbox-store (JAVA):
Affected version(s) =3.9.0 <3.9.1
Fix Suggestion:
Update to version 3.9.1
Related Resources (2)
https://lists.apache.org/thread.html/7qwsmkk88xbfq4q9o0pz9bt8p9p1yjs7
http://www.openwall.com/lists/oss-security/2026/11/06/14
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Access Control
CWE-284