DEBIAN-CVE-2026-78030
DBI versions before 1.653 for Perl load arbitrary modules via unvalidated dbm_type and dbm_mldbm attributes in DBD::DBM. DBD::DBM passes the dbm_type and dbm_mldbm connect attributes to require without checking that the value names a module. require treats a path-shaped string as a literal filename and does not consult @INC, so the attribute chooses the file that Perl loads and runs. The MLDBM::Serializer:: prefix that DBD::DBM prepends to dbm_mldbm is not a boundary: only the :: separators are rewritten to /, so a value containing / traverses out of the serializer directory. The value is also assigned to $MLDBM::Serializer, which MLDBM requires the same way when it ties the table. A caller that lets an untrusted party influence either attribute, for example through a DSN fragment or a parameter that selects a storage backend, runs the file-scope code of whatever module the value names. For example, my $dsn = "dbi:DBM:f_dir=/var/db;dbm_type=../../Untrusted.pm" my $dbh = DBI->connect( $dsn ); Note that DBD::Gofer forwards connect attributes to the server side, and DBI::ProxyServer checks only that a DSN starts with a driver prefix.
DEBIAN-CVE-2026-78030
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-78030
libdbi-perl
Source reference: /affected/0/package/name
- Affected versions
- 1.643-4
Source reference:
/affected/0/versions1.643-4+deb12u1Source reference:
/affected/0/versions1.643-4+deb12u2Source reference:
/affected/0/versions - Fixed versions
- 1.643-4+deb12u3
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/1/package/name
- Affected versions
- 1.647-1
Source reference:
/affected/1/versions1.647-1+deb13u1Source reference:
/affected/1/versions1.648-1Source reference:
/affected/1/versions1.649-1Source reference:
/affected/1/versions1.650-1Source reference:
/affected/1/versions1.651-1Source reference:
/affected/1/versions1.652-1Source reference:
/affected/1/versions1.652-2Source reference:
/affected/1/versions1.652-2~deb13u1Source reference:
/affected/1/versions1.653-1Source reference:
/affected/1/versions1.654-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
libdbi-perl
Source reference: /affected/2/package/name
- Affected versions
- 1.647-1
Source reference:
/affected/2/versions1.648-1Source reference:
/affected/2/versions1.649-1Source reference:
/affected/2/versions1.650-1Source reference:
/affected/2/versions1.651-1Source reference:
/affected/2/versions1.652-1Source reference:
/affected/2/versions1.652-2Source reference:
/affected/2/versions1.652-2~deb13u1Source reference:
/affected/2/versions - Fixed versions
- 1.653-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.643-4+deb12u3"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/debian/libdbi-perl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.643-4",
"1.643-4+deb12u1",
"1.643-4+deb12u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78030.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/debian/libdbi-perl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.647-1",
"1.647-1+deb13u1",
"1.648-1",
"1.649-1",
"1.650-1",
"1.651-1",
"1.652-1",
"1.652-2",
"1.652-2~deb13u1",
"1.653-1",
"1.654-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78030.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.653-1"
}
]
}
],
"package": {
"name": "libdbi-perl",
"purl": "pkg:deb/debian/libdbi-perl?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.647-1",
"1.648-1",
"1.649-1",
"1.650-1",
"1.651-1",
"1.652-1",
"1.652-2",
"1.652-2~deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-78030.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #23934 · Revision 1
- Added to Heist Feed
- Publisher date