ubuntu-cve-2026-44742
Vulnerability from osv_ubuntu
Published
2026-05-07 19:16
Modified
2026-05-27 17:53
Summary
Details
Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.
Severity
7.2 (High)
6.1 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python-django-postorius",
"binary_version": "1.1.2-3ubuntu0.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "postorius",
"purl": "pkg:deb/ubuntu/postorius@1.1.2-3ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.1.2-3ubuntu0.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.1.0-1",
"1.1.1-1",
"1.1.2-1",
"1.1.2-2",
"1.1.2-3",
"1.1.2-3ubuntu0.1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-django-postorius",
"binary_version": "1.2.4-1ubuntu0.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "postorius",
"purl": "pkg:deb/ubuntu/postorius@1.2.4-1ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.4-1ubuntu0.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.2.4-1",
"1.2.4-1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-django-postorius",
"binary_version": "1.3.5-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "postorius",
"purl": "pkg:deb/ubuntu/postorius@1.3.5-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.5-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.4-2",
"1.3.5-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "python3-django-postorius",
"binary_version": "1.3.10-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "postorius",
"purl": "pkg:deb/ubuntu/postorius@1.3.10-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.10-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.8-3",
"1.3.10-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "python3-django-postorius",
"binary_version": "1.3.13-1ubuntu1.1~25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "postorius",
"purl": "pkg:deb/ubuntu/postorius@1.3.13-1ubuntu1.1~25.10.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.13-1ubuntu1.1~25.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.13-1",
"1.3.13-1ubuntu1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "python3-django-postorius",
"binary_version": "1.3.13-1ubuntu1.1~26.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "postorius",
"purl": "pkg:deb/ubuntu/postorius@1.3.13-1ubuntu1.1~26.04.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.3.13-1ubuntu1.1~26.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.13-1ubuntu1"
]
}
],
"aliases": [],
"details": "Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.",
"id": "UBUNTU-CVE-2026-44742",
"modified": "2026-05-27T17:53:03Z",
"published": "2026-05-07T19:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-44742"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-44742"
},
{
"type": "REPORT",
"url": "https://gitlab.com/mailman/postorius/-/commit/c4706abd05ba6bcf472fc674b160d3a9d6a4868b"
},
{
"type": "REPORT",
"url": "https://gitlab.com/mailman/postorius/-/merge_requests/972"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8323-1"
}
],
"related": [
"USN-8323-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-44742"
]
}
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…