Apache James: WebAdmin exposed without authentication on official Docker default

Some docker-compose shipped by the project exposes by default Webadmin REST API publically without proper authentication setup. Version 3.9.1 onward sets a random credential by default on unprotected webadmin endpoints to prevent this while retain convenience.

Apache James MIME4J: Denial of service due to Allocation of Resources Without Limits or Throttling

Allocation of Resources Without Limits or Throttling in Apache James Mime4J library prior version 0.8.15 allows Denial of Service upon parsing Mime messages. Users are recommended to upgrade to version 0.8.15 which fixes the issue by enforcing new limits and providing better defaults.

Apache James: SSRF filter bypass in the JMAP PushSubscription web-push client

In Apache James server prior version 3.9.1 improper validation in JMAP webPush SSRF validation did lead to the possibility to reach internal addresses. Users are recommended to upgrade to version 3.9.1 which fixes this issue.

Apache James: ManageSieve file implementation cross-user path traversal

In Apache James server prior version 3.9.1 relying on the SieveFileRepository incorect validation of file paths can result in path transversal, allowing to set arbitrary SIEVE scripts for other users. This allows a logged in attacker to set arbitrary SIEVE scripts for other users, resulting in denial of service or even traffic capture. Users are recommended to upgrade to version 3.9.1 which fixes this issue.

Apache James: Negative IMAP ACL administer authorization bypass through JMAP protocol

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.

Apache James: SASL OAUTHBEARER do not validate aud in JWT payload if misconfigred

Apache James SASL OAuthBearer/XOAUTH2 prior versions 3.9.1 fails to validate correctly AUD claim of JWT payloads when introspection is not configured. This allows an attacker with valid credentials to access the mail server even if they are not authorized to do so. We recommend users to upgrade to non vulnerable version that forces explicit configuration of aud claims and forces introspection.

Apache James: Denial of service upon MIME parsing

Allocation of Resources Without Limits or Throttling in Apache James Mime4J library prior version 0.8.15 allows Denial of Service upon parsing Mime messages. Users are recommended to upgrade to Apache James server 3.9.1 that relies on fixed MIME4J 0.8.15 which addresses the issue. See CVE-2026-85108 in Apache James MIME4J library.

Apache James: denial of service through JMAP HTML to text conversion

Apache James server JMAP HTML to text plain implementation in versions below 3.8.2 and 3.7.6 is subject to unbounded memory consumption that can result in a denial of service. Users are recommended to upgrade to version 3.7.6 and 3.8.2, which fix this issue.

Spooler in Apache Foundation James 2.2.0 allows local users to cause a denial of service (memory consumption) by triggering various error conditions in the retrieve function, which prevents a lock from being released and causes a memory leak.

The SMTP server in Apache Java Mail Enterprise Server (aka Apache James) 2.2.0 allows remote attackers to cause a denial of service (CPU consumption) via a long argument to the MAIL command.

Apache James: denial of service through the use of IMAP literals

Similarly to CVE-2024-34055, Apache James is vulnerable to denial of service through the abuse of IMAP literals from both authenticated and unauthenticated users, which could be used to cause unbounded memory allocation and very long computations Version 3.7.6 and 3.8.2 restrict such illegitimate use of IMAP literals.

Apache James Mime4J: Mime4J DOM header injection

Improper input validation allows for header injection in MIME4J library when using MIME4J DOM for composing message. This can be exploited by an attacker to add unintended headers to MIME messages.

SMTP smuggling in Apache James

Apache James prior to versions 3.8.1 and 3.7.5 is vulnerable to SMTP smuggling. A lenient behaviour in line delimiter handling might create a difference of interpretation between the sender and the receiver which can be exploited by an attacker to forge an SMTP envelop, allowing for instance to bypass SPF checks. The patch implies enforcement of CRLF as a line delimiter as part of the DATA transaction. We recommend James users to upgrade to non vulnerable versions.

Apache James server: Privilege escalation via JMX pre-authentication deserialisation

Apache James prior to version 3.7.5 and 3.8.0 exposes a JMX endpoint on localhost subject to pre-authentication deserialisation of untrusted data. Given a deserialisation gadjet, this could be leveraged as part of an exploit chain that could result in privilege escalation. Note that by default JMX endpoint is only bound locally. We recommend users to:  - Upgrade to a non-vulnerable Apache James version  - Run Apache James isolated from other processes (docker - dedicated virtual machine)  - If possible turn off JMX

The JMX server embedded in Apache James, also used by the command line client is exposed to a java de-serialization issue, and thus can be used to execute arbitrary commands. As James exposes JMX socket by default only on local-host, this vulnerability can only be used for privilege escalation. Release 3.0.1 upgrades the incriminated library.

Apache James Server 2.3.2, when configured with file-based user repositories, allows attackers to execute arbitrary system commands via unspecified vectors.

Apache James server: Temporary File Information Disclosure

Usage of temporary files with insecure permissions by the Apache James server allows an attacker with local access to access private user data in transit. Vulnerable components includes the SMTP stack and IMAP APPEND command. This issue affects Apache James server version 3.7.2 and prior versions.

Apache James MIME4J: Temporary File Information Disclosure in MIME4J TempFileStorageProvider

Unproper laxist permissions on the temporary files used by MIME4J TempFileStorageProvider may lead to information disclosure to other local users. This issue affects Apache James MIME4J version 0.8.8 and prior versions. We recommend users to upgrade to MIME4j version 0.8.9 or later.

Apache James server: Privilege escalation through unauthenticated JMX

Apache James server version 3.7.3 and earlier provides a JMX management service without authentication by default. This allows privilege escalation by a malicious local user. Administrators are advised to disable JMX, or set up a JMX password. Note that version 3.7.4 onward will set up a JMX password automatically for Guice users.

STARTTLS command injection in Apache JAMES

Apache James prior to release 3.6.3 and 3.7.1 is vulnerable to a buffering attack relying on the use of the STARTTLS command. Fix of CVE-2021-38542, which solved similar problem fron Apache James 3.6.1, is subject to a parser differential and do not take into account concurrent requests.