CVE-2026-61910

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-61910
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-09 20:18:36 UTC
Updated2026-09-09 20:22:32 UTC
DescriptionAn issue was discovered in Cyrus IMAP before 3.12.4. Mailbox/set let a sharee change a special-use role on shared mailboxes. An authenticated user with maySetKeywords on another user's mailbox could change that mailbox's specialuse annotation. This could allow the sharee to change the shared mailbox to perform the archived, snoozed, or other role, which might cause mail mail to be written to the shared mailbox, sharing more content than intended. (This is likely to be an unusual situation, made more unusual because if the target already has an non-shared mailbox with that role, role duplication suppression will prevent the update.)

Risk And Classification

Primary CVSS: v3.1 3.5 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

EPSS: 0.001880000 probability, percentile 0.085150000 (date 2026-09-10)

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.5LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
3.1CNACVSS3.5LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cyrusimap Cyrus IMAP affected 3.8.8 semver Not specified
CNA Cyrusimap Cyrus IMAP affected 3.9.0 3.10.4 semver Not specified
CNA Cyrusimap Cyrus IMAP affected 3.11.0 3.12.4 semver Not specified

References

ReferenceSourceLinkTags
www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html [email protected] www.cyrusimap.org
cyrusimap.org [email protected] cyrusimap.org
www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html [email protected] www.cyrusimap.org
www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html [email protected] www.cyrusimap.org
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