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CVE-2026-47081

Quick assessment

Affected
cyrusimap Cyrus IMAP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

cyrusimap Cyrus IMAP是cyrusimap团队开源的一款支持IMAP协议的邮件服务器。 cyrusimap Cyrus IMAP 3.12.2及之前版本存在授权问题漏洞，该漏洞源于授权问题，可能导致经过身份验证的IMAP用户通过XAPPLEPUSHSERVICE命令探测其他用户账户中任意邮箱的存在，并创建Apple Push Notification Service通知，导致推送劫持。

CVSS 3.1 · Low EPSS 0.16% · P6

Affected Version Matrix 1

VendorProduct Version RangeStatus
cyrusimap Cyrus IMAP < 3.12.3 affected
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I. Basic Information for CVE-2026-47081

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an XAPPLEPUSHSERVICE folder existence oracle and push hijack. An authenticated IMAP user could probe for the existence of arbitrary mailboxes on other users' accounts via the XAPPLEPUSHSERVICE command and then create Apple Push Notification Service notifications for new mail in those mailboxes to their own APNS device. This did not leak any data about the content of mailboxes. Instead, a "mailbox has changed" notice would be pushed when the mailbox modseq changed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
cyrusimap Cyrus IMAP 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cyrusimap Cyrus IMAP是cyrusimap团队开源的一款支持IMAP协议的邮件服务器。 cyrusimap Cyrus IMAP 3.12.2及之前版本存在授权问题漏洞，该漏洞源于授权问题，可能导致经过身份验证的IMAP用户通过XAPPLEPUSHSERVICE命令探测其他用户账户中任意邮箱的存在，并创建Apple Push Notification Service通知，导致推送劫持。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
cyrusimap Cyrus IMAP 0 ~ 3.12.3 -

II. Public POCs for CVE-2026-47081

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III. Intelligence Information for CVE-2026-47081

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Vendor Pages for CVE-2026-47081 (2)

Same Patch Batch · cyrusimap · 2026-07-16 · 9 CVEs total

CVE-2026-47084 6.5 MEDIUM cyrusimap Cyrus IMAP 授权问题漏洞
CVE-2026-47082 5.4 MEDIUM cyrusimap Cyrus IMAP 授权问题漏洞
CVE-2026-47083 4.3 MEDIUM cyrusimap Cyrus IMAP 侧信道信息泄露漏洞
CVE-2026-47089 4.3 MEDIUM cyrusimap Cyrus IMAP 授权问题漏洞
CVE-2026-47085 4.0 MEDIUM cyrusimap Cyrus IMAP 加密问题漏洞
CVE-2026-47086 3.5 LOW cyrusimap Cyrus IMAP 授权问题漏洞
CVE-2026-47087 3.5 LOW cyrusimap Cyrus IMAP 资源管理错误漏洞
CVE-2026-47088 3.1 LOW cyrusimap Cyrus IMAP 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: Cyrus IMAP
Same vendor: cyrusimap
Same weakness: CWE-863

V. Comments for CVE-2026-47081

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