UBUNTU-CVE-2026-47082 (CVE-2026-47082)
Vulnerability from osv_ubuntu – Published: 2026-07-16 19:16 – Updated: 2026-07-29 07:58 – Source website
VLAI
Details
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation "fcc" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc (to save a copy of the sent message) could deliver vacation auto-reply copies into any mailbox the script could name, regardless of whether the script owner had insert permissions on the destination mailbox.
Severity
5.4 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-clients",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-common",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-murder",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "cyrus-replication",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@2.5.10-3ubuntu1.1+esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.10-3build1",
"2.5.10-3build2",
"2.5.10-3ubuntu1",
"2.5.10-3ubuntu1.1",
"2.5.10-3ubuntu1.1+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-clients",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-common",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-murder",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "cyrus-replication",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "3.0.13-5ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.0.13-5ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.0.11-1",
"3.0.11-1build1",
"3.0.12-1",
"3.0.12-2",
"3.0.12-2ubuntu2",
"3.0.12-2ubuntu3",
"3.0.13-2ubuntu1",
"3.0.13-3ubuntu1",
"3.0.13-4ubuntu1",
"3.0.13-5",
"3.0.13-5ubuntu0.1~esm1",
"3.0.13-5ubuntu0.1~esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-clients",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-common",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-murder",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "cyrus-replication",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "3.4.3-3ubuntu0.3+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.4.3-3ubuntu0.3+esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.2.6-2build1",
"3.4.2-2",
"3.4.2-2build1",
"3.4.3-2",
"3.4.3-3",
"3.4.3-3build2",
"3.4.3-3ubuntu0.1",
"3.4.3-3ubuntu0.1+esm1",
"3.4.3-3ubuntu0.3",
"3.4.3-3ubuntu0.3+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-clients",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-common",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-murder",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "cyrus-replication",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "3.8.2-1ubuntu0.2+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.8.2-1ubuntu0.2+esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.8.0-5",
"3.8.1-1",
"3.8.1-1build1",
"3.8.1-1build2",
"3.8.1-3",
"3.8.1-3build3",
"3.8.2-1",
"3.8.2-1ubuntu0.1~esm1",
"3.8.2-1ubuntu0.2",
"3.8.2-1ubuntu0.2+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-clients",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-common",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-murder",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "3.12.1-3"
},
{
"binary_name": "cyrus-replication",
"binary_version": "3.12.1-3"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "3.12.1-3"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.12.1-3?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.10.2-1",
"3.12.1-2",
"3.12.1-2build1",
"3.12.1-3"
]
}
],
"aliases": [],
"details": "An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation \"fcc\" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc (to save a copy of the sent message) could deliver vacation auto-reply copies into any mailbox the script could name, regardless of whether the script owner had insert permissions on the destination mailbox.",
"id": "UBUNTU-CVE-2026-47082",
"modified": "2026-07-29T07:58:05Z",
"published": "2026-07-16T19:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-47082"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-47082"
},
{
"type": "REPORT",
"url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html"
},
{
"type": "REPORT",
"url": "https://www.cyrusimap.org/imap/download/release-notes/index.html"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-47082"
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…