cyrusimap Cyrus IMAP up to 3.12.2 LISTRIGHTS improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k2.09

Summaryinfo

A vulnerability was found in cyrusimap Cyrus IMAP up to 3.12.2. It has been declared as problematic. The affected element is an unknown function of the component LISTRIGHTS Handler. Such manipulation leads to improper authentication. This vulnerability is documented as CVE-2026-47089. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in cyrusimap Cyrus IMAP up to 3.12.2 and classified as problematic. Affected by this issue is some unknown processing of the component LISTRIGHTS Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality. CVE summarizes:

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. LISTRIGHTS os not limited to users with admin access. An authenticated user could call IMAP LISTRIGHTS against any mailbox they could name and learn what principals had what access to it. (This action should have been restricted to users with admin access on the target mailbox.)

The advisory is shared for download at cyrusimap.org. This vulnerability is handled as CVE-2026-47089 since 05/18/2026. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 3.12.3 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: Cyrus IMAP 3.12.3

Timelineinfo

05/18/2026 CVE reserved
07/16/2026 +59 days Advisory disclosed
07/16/2026 +0 days VulDB entry created
07/16/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cyrusimap.org
Status: Confirmed

CVE: CVE-2026-47089 (🔒)
GCVE (CVE): GCVE-0-2026-47089
GCVE (VulDB): GCVE-100-379616

Entryinfo

Created: 07/16/2026 21:09
Changes: 07/16/2026 21:09 (53)
Complete: 🔍
Cache ID: 216::103

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