ubuntu-cve-2025-3932
Vulnerability from osv_ubuntu
Published
2025-05-14 17:15
Modified
2026-07-22 05:50
Summary
Details
It was possible to craft an email that showed a tracking link as an attachment. If the user attempted to open the attachment, Thunderbird automatically accessed the link. The configuration to block remote content did not prevent that. Thunderbird has been fixed to no longer allow access to web pages listed in the X-Mozilla-External-Attachment-URL header of an email. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1.
Severity
6.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "thunderbird",
"binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
},
{
"binary_name": "thunderbird-gnome-support",
"binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
},
{
"binary_name": "thunderbird-mozsymbols",
"binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
},
{
"binary_name": "xul-ext-calendar-timezones",
"binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
},
{
"binary_name": "xul-ext-gdata-provider",
"binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
},
{
"binary_name": "xul-ext-lightning",
"binary_version": "1:128.12.0+build1-0ubuntu0.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "thunderbird",
"purl": "pkg:deb/ubuntu/thunderbird@1:128.12.0+build1-0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:128.12.0+build1-0ubuntu0.22.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:91.1.2+build1-0ubuntu1",
"1:91.3.0+build2-0ubuntu1",
"1:91.3.1+build1-0ubuntu1",
"1:91.3.2+build1-0ubuntu1",
"1:91.4.0+build1.1-0ubuntu1",
"1:91.4.0+build2-0ubuntu1",
"1:91.5.0+build1-0ubuntu1",
"1:91.5.1+build1-0ubuntu1",
"1:91.6.1+build1-0ubuntu1",
"1:91.7.0+build1-0ubuntu1",
"1:91.7.0+build2-0ubuntu1",
"1:91.8.0+build2-0ubuntu1",
"1:91.9.1+build1-0ubuntu0.22.04.1",
"1:91.11.0+build2-0ubuntu0.22.04.1",
"1:102.2.2+build1-0ubuntu0.22.04.1",
"1:102.4.2+build2-0ubuntu0.22.04.1",
"1:102.7.1+build2-0ubuntu0.22.04.1",
"1:102.8.0+build2-0ubuntu0.22.04.1",
"1:102.9.0+build1-0ubuntu0.22.04.1",
"1:102.10.0+build2-0ubuntu0.22.04.1",
"1:102.11.0+build1-0ubuntu0.22.04.1",
"1:102.13.0+build1-0ubuntu0.22.04.1",
"1:102.15.0+build1-0ubuntu0.22.04.1",
"1:102.15.1+build1-0ubuntu0.22.04.1",
"1:115.3.1+build1-0ubuntu0.22.04.2",
"1:115.4.1+build1-0ubuntu0.22.04.1",
"1:115.5.0+build1-0ubuntu0.22.04.1",
"1:115.6.0+build2-0ubuntu0.22.04.1",
"1:115.8.1+build1-0ubuntu0.22.04.1",
"1:115.9.0+build1-0ubuntu0.22.04.1",
"1:115.10.1+build1-0ubuntu0.22.04.1",
"1:115.11.0+build2-0ubuntu0.22.04.1",
"1:115.12.0+build3-0ubuntu0.22.04.1",
"1:115.13.0+build5-0ubuntu0.22.04.1",
"1:115.15.0+build1-0ubuntu0.22.04.1",
"1:115.16.0+build2-0ubuntu0.22.04.1",
"1:115.18.0+build1-0ubuntu0.22.04.1"
]
}
],
"aliases": [],
"details": "It was possible to craft an email that showed a tracking link as an attachment. If the user attempted to open the attachment, Thunderbird automatically accessed the link. The configuration to block remote content did not prevent that. Thunderbird has been fixed to no longer allow access to web pages listed in the X-Mozilla-External-Attachment-URL header of an email. This vulnerability affects Thunderbird \u003c 128.10.1 and Thunderbird \u003c 138.0.1.",
"id": "UBUNTU-CVE-2025-3932",
"modified": "2026-07-22T05:50:19Z",
"published": "2025-05-14T17:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-3932"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-3932"
},
{
"type": "REPORT",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2025-34/#CVE-2025-3932"
},
{
"type": "REPORT",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1960412"
},
{
"type": "REPORT",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-34/"
},
{
"type": "REPORT",
"url": "https://www.mozilla.org/security/advisories/mfsa2025-35/"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7663-1"
}
],
"related": [
"USN-7663-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-3932"
]
}
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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.
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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.
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