Is there a public exploit for CVE-2026-49939?

No public exploit for CVE-2026-49939 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

What does CVE-2026-49939 affect?

CVE-2026-49939 affects Apache Software Foundation Apache James.

— Unscored

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…

CVE-2026-49939

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.

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 6 November 2026
Last updated: 6 November 2026
Affected: Apache Software Foundation · Apache James
Assigner: apache

At the source

EUVD (ENISA)

References

https://lists.apache.org/thread.html/7qwsmkk88xbfq4q9o0pz9bt8p9p1yjs7

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