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CVE-2026-47086

3.5 · LOW

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2.

Published Jul 16, 2026CWE-863EPSS 0.27%

Overview

CVE-2026-47086 is a low-severity vulnerability. It was published on July 16, 2026 and has a CVSS 3.1 base score of 3.5 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. GENURLAUTH-issued tokens can bypass ACLs. Any authenticated user could mint a URLAUTH token (via the GENURLAUTH command) for any mailbox they could name, even without read access on it. This would allow reading mail from mailboxes despite having no granted permissions.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.htmlRefwww.cyrusimap.org/imap/download/release-notes/index.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-47086?

CVE-2026-47086 is a low-severity vulnerability. It was published on July 16, 2026 and has a CVSS 3.1 base score of 3.5 (LOW).

How severe is CVE-2026-47086?

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-47086?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-47086?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-47086 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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