Dashboard / CVE-2026-49939

CVE-2026-49939

HIGH
MEDIUM Priority: 0.03 BB Relevance: 75/100
Published: 2026-11-06 Modified: 2026-11-10 First seen: 2026-11-06 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: None
A: None

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
Apache Software Foundation Apache James 3.9.0 < 3.9.1
Apache Software Foundation Apache James 3.9.0 < 3.9.1
Apache Software Foundation Apache James 3.9.0 < 3.9.1

References & Advisories (2)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.36%
Raw Score 0.003560
Percentile 29.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00356
2026-11-12
0.00356
2026-11-10
0.00201
2026-11-09
0.00201
2026-11-08
0.00201
2026-11-07
0.00201

Intelligence Sources

mitre ref →
nvd ref →

External Links