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OX Dovecot Pro EUVDEUVD-2026-67667

| CVE-2026-40018 HIGH
SQL Injection (CWE-89)
2026-08-28 OX GHSA-8r49-82qf-r286
7.4
CVSS 3.1 · Vendor: OX
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Severity by source

Vendor (OX) PRIMARY
7.4 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
vuln.today AI
7.4 HIGH

Network-reachable SQL injection with no auth, high complexity constraint, and no availability impact matches the provided vector; independently assessed as consistent.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (OX).

CVSS VectorVendor: OX

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

3
Patch available
Aug 28, 2026 - 13:17 EUVD
Analysis Generated
Aug 28, 2026 - 11:49 vuln.today
CVE Published
Aug 28, 2026 - 10:12 cve.org
HIGH 7.4

DescriptionCVE.org

None None None No publicly available exploits are known.

AnalysisAI

SQL injection in Open-Xchange OX Dovecot Pro and OX Dovecot CE enables unauthenticated remote attackers, under high-complexity conditions, to read and manipulate backend database contents - yielding high confidentiality and integrity impact with no availability disruption. Both the commercial (Pro) and community (CE) editions of the OX-branded Dovecot mail server are confirmed affected per vendor CPE data and the OX advisory OXDC-ADV-2026-0003. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation The CVSS vector (PR:N/UI:N/AV:N) indicates no authentication and no user interaction are required, and the attack is network-reachable. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.4 base score is substantiated by the high confidentiality and integrity impact, but the AC:H metric is a meaningful moderating factor - exploitation requires non-trivial conditions that are not fully described due to the malformed CVE description. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to apply the patch or upgraded version referenced in Open-Xchange's advisory OXDC-ADV-2026-0003 (https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json); the advisory should specify the exact fixed version, which was not independently confirmed from the data available here. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify and catalog all systems running OX Dovecot Pro or CE versions currently deployed in your infrastructure. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

CVE-2026-27851 CRITICAL
9.1 May 12

Authentication-layer injection in OX Dovecot Pro (versions up to and including 2.4.3 and 3.1.4) arises from a flaw in th

CVE-2026-42007 CRITICAL
9.1 Aug 28

Use-after-free in the OX Dovecot Pro and Dovecot CE mail-editing code lets an authenticated user who can install a Sieve

CVE-2026-24031 HIGH
8.2 Mar 27

Authentication bypass and user enumeration in OX Dovecot Pro (versions up to and including 3.1.0 and the 2.4.x line up t

CVE-2025-59032 HIGH
7.5 Mar 27

OX Dovecot Pro ManageSieve service crashes when processing AUTHENTICATE commands with SASL initial responses using liter

CVE-2026-27858 HIGH
7.5 Mar 27

OX Dovecot Pro managesieve-login process crashes repeatedly due to memory exhaustion triggered by unauthenticated attack

CVE-2026-27857 HIGH
7.5 Mar 27

Remote memory-exhaustion denial of service in OX Dovecot Pro (versions up to and including 2.3.0) lets an unauthenticate

CVE-2026-42391 HIGH
7.5 Aug 28

Denial of service in OX Dovecot Pro and OX Dovecot CE allows unauthenticated remote attackers to exhaust memory and CPU

CVE-2026-33605 HIGH
7.5 Aug 28

ManageSieve login process in OX Dovecot CE and Pro crashes on receipt of a small malformed pre-authentication command, e

CVE-2026-27852 HIGH
7.5 Aug 28

Memory exhaustion in OX Dovecot Pro and OX Dovecot CE allows any remote sender to deny IMAP service to a targeted user b

CVE-2026-73208 HIGH
7.4 Aug 28

OAuth2 token validation in OX Dovecot Pro and OX Dovecot CE contains a logic error that permits authentication bypass wh

CVE-2026-73209 MEDIUM
6.5 Aug 28

Stack exhaustion via crafted compressed IMAP data in OX Dovecot Pro and OX Dovecot CE allows an authenticated remote att

CVE-2026-52687 MEDIUM
6.5 Aug 28

IMAP compression in OX Dovecot Pro and OX Dovecot CE allows any authenticated user to exhaust the memory of the imap-log

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EUVD-2026-67667 vulnerability details – vuln.today

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