DEBIAN-CVE-2026-33155
DeepDiff is a project focused on Deep Difference and search of any Python data. From version 5.0.0 to before version 8.6.2, the pickle unpickler _RestrictedUnpickler validates which classes can be loaded but does not limit their constructor arguments. A few of the types in SAFE_TO_IMPORT have constructors that allocate memory proportional to their input (builtins.bytes, builtins.list, builtins.range). A 40-byte pickle payload can force 10+ GB of memory, which crashes applications that load delta objects or call pickle_load with untrusted data. This issue has been patched in version 8.6.2.
DEBIAN-CVE-2026-33155
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-2026-33155
deepdiff
Source reference: /affected/0/package/name
- Affected versions
- 6.2.2-1
Source reference:
/affected/0/versions6.7.1-1Source reference:
/affected/0/versions6.7.1-2Source reference:
/affected/0/versions8.1.1-1Source reference:
/affected/0/versions8.1.1-2Source reference:
/affected/0/versions8.1.1-3Source reference:
/affected/0/versions8.1.1-4Source reference:
/affected/0/versions8.6.1-1Source reference:
/affected/0/versions9.0.0-1Source reference:
/affected/0/versions9.0.0-2Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
deepdiff
Source reference: /affected/1/package/name
- Affected versions
- 8.1.1-4
Source reference:
/affected/1/versions - Fixed versions
- 8.1.1-4+deb13u1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
deepdiff
Source reference: /affected/2/package/name
- Affected versions
- 8.1.1-4
Source reference:
/affected/2/versions8.6.1-1Source reference:
/affected/2/versions - Fixed versions
- 9.0.0-1
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"
}
]
}
],
"package": {
"name": "deepdiff",
"purl": "pkg:deb/debian/deepdiff?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"6.2.2-1",
"6.7.1-1",
"6.7.1-2",
"8.1.1-1",
"8.1.1-2",
"8.1.1-3",
"8.1.1-4",
"8.6.1-1",
"9.0.0-1",
"9.0.0-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33155.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.1.1-4+deb13u1"
}
]
}
],
"package": {
"name": "deepdiff",
"purl": "pkg:deb/debian/deepdiff?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"8.1.1-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33155.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "9.0.0-1"
}
]
}
],
"package": {
"name": "deepdiff",
"purl": "pkg:deb/debian/deepdiff?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"8.1.1-4",
"8.6.1-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33155.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55936 · Revision 1
- Added to Heist Feed
- Publisher date