xdg-utils — security advisory
A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.
- Products
- xdg-utils
- Affected versions
- 1.1.3-4.1, 1.2.1-1, 1.2.1-2
- Fixed versions
- Not specified
- CVEs
- CVE-2020-27748
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:46 UTC · Revision 1
Source evidence
A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.
osv:DEBIAN-CVE-2020-27748
xdg-utils
Fixed versions: Not specified
xdg-utils
Fixed versions: Not specified
xdg-utils
Fixed versions: Not specified
Complete source record
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"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-27748",
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"modified": "2026-10-26T12:02:41.963538696Z",
"provider": "osv",
"upstream": [
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"references": [
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 452811,
"published_at": "2021-06-01T14:15:08.387+00:00"
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