Security update for cyrus-imapd
A security update for cyrus-imapd addresses multiple vulnerabilities including folder existence oracle, cross-user content oracle, ACL bypasses, token forgery, heap exposure, and privilege escalation issues. These vulnerabilities are fixed in version 3.8.7, a bugfix release. The issues affect various aspects of access control and token validation in the software.
AI Analysis
Technical Summary
The cyrus-imapd update to version 3.8.7 fixes several security issues identified by CVE identifiers CVE-2026-47081 through CVE-2026-47089. These include an XAPPLEPUSHSERVICE folder existence oracle and push hijack, an ESEARCH cross-user content oracle, ACL bypasses in vacation 'fcc' and LOCALDELETE operations, URLAUTH token forgery and ACL bypasses, heap exposure in nested MIME comment parsing, and improper access control in LISTRIGHTS. The update addresses these vulnerabilities to improve the security posture of the cyrus-imapd mail server.
Potential Impact
The vulnerabilities could allow unauthorized information disclosure, bypass of access controls, token forgery, and potential privilege escalation within the cyrus-imapd mail server environment. These issues may lead to unauthorized access to mailbox content, manipulation of push notifications, and exposure of heap memory data. The overall impact is medium severity given the range of issues affecting confidentiality and integrity controls.
Mitigation Recommendations
A security update is available that fixes these vulnerabilities in cyrus-imapd version 3.8.7. Users and administrators should apply this update promptly to mitigate the identified security risks. No additional vendor advisory content was provided; therefore, patch status is confirmed by the availability of this update.
Security update for cyrus-imapd
Description
A security update for cyrus-imapd addresses multiple vulnerabilities including folder existence oracle, cross-user content oracle, ACL bypasses, token forgery, heap exposure, and privilege escalation issues. These vulnerabilities are fixed in version 3.8.7, a bugfix release. The issues affect various aspects of access control and token validation in the software.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The cyrus-imapd update to version 3.8.7 fixes several security issues identified by CVE identifiers CVE-2026-47081 through CVE-2026-47089. These include an XAPPLEPUSHSERVICE folder existence oracle and push hijack, an ESEARCH cross-user content oracle, ACL bypasses in vacation 'fcc' and LOCALDELETE operations, URLAUTH token forgery and ACL bypasses, heap exposure in nested MIME comment parsing, and improper access control in LISTRIGHTS. The update addresses these vulnerabilities to improve the security posture of the cyrus-imapd mail server.
Potential Impact
The vulnerabilities could allow unauthorized information disclosure, bypass of access controls, token forgery, and potential privilege escalation within the cyrus-imapd mail server environment. These issues may lead to unauthorized access to mailbox content, manipulation of push notifications, and exposure of heap memory data. The overall impact is medium severity given the range of issues affecting confidentiality and integrity controls.
Mitigation Recommendations
A security update is available that fixes these vulnerabilities in cyrus-imapd version 3.8.7. Users and administrators should apply this update promptly to mitigate the identified security risks. No additional vendor advisory content was provided; therefore, patch status is confirmed by the availability of this update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- SUSE Product Security Team
- Advisory Id
- openSUSE-SU-2026:21368-1
- Cve Count
- 9
- Additional Cves
- ["CVE-2026-47082","CVE-2026-47083","CVE-2026-47084","CVE-2026-47085","CVE-2026-47086","CVE-2026-47087","CVE-2026-47088","CVE-2026-47089"]
- State
- PUBLISHED
Threat ID: 6aab496a55bf5e2cf5990d17
Added to database: 09/17/2026, 01:59:06 UTC
Last enriched: 09/17/2026, 02:12:35 UTC
Last updated: 09/17/2026, 02:12:35 UTC
Views: 2
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