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.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache James | unaffected |
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No data available yet.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Fri, 06 Nov 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Apache James: Negative IMAP ACL administer authorization bypass through JMAP protocol | |
| Weaknesses | CWE-284 | |
| References |
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-11-06T11:40:59.146Z
Reserved: 2026-06-02T15:37:15.047Z
Link: CVE-2026-49939
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-11-06T12:17:21.517
Modified: 2026-11-06T12:17:21.517
Link: CVE-2026-49939
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-11-06T12:30:04Z
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CWE-284
Improper Access Control