What is CVE-2026-47086?

CVE-2026-47086 is a low-severity vulnerability in Cyrusimap Cyrus Imap, classified under Incorrect Authorization. CVSS score: 3.5/10. Published 2026-07-16.

How severe is CVE-2026-47086?

Low severity. CVSS v3 base score is 3.5 out of 10.

Auth bypass in Cyrusimap Cyrus Imap

CVE-2026-47086

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 rea…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N.

Affected products

Cyrusimap Cyrus Imap — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-47086?: CVE-2026-47086 is a low-severity vulnerability in Cyrusimap Cyrus Imap, classified under Incorrect Authorization. CVSS score: 3.5/10. Published 2026-07-16.
How severe is CVE-2026-47086?: Low severity. CVSS v3 base score is 3.5 out of 10.