UBUNTU-CVE-2026-33155

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-33155
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33155.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33155
Upstream
Published
2026-03-20T21:17:00Z
Modified
2026-05-20T16:25:24Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:20.04:LTS / deepdiff

Package

Name
deepdiff
Purl
pkg:deb/ubuntu/deepdiff?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.3.0-1
3.3.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-deepdiff",
            "binary_version": "3.3.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33155.json"

Ubuntu:22.04:LTS / deepdiff

Package

Name
deepdiff
Purl
pkg:deb/ubuntu/deepdiff?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.3.0-2
3.3.0-2ubuntu1
3.3.0-3
5.*
5.6.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-deepdiff",
            "binary_version": "5.6.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33155.json"

Ubuntu:24.04:LTS / deepdiff

Package

Name
deepdiff
Purl
pkg:deb/ubuntu/deepdiff?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.2.2-1
6.7.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-deepdiff",
            "binary_version": "6.7.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33155.json"

Ubuntu:25.10 / deepdiff

Package

Name
deepdiff
Purl
pkg:deb/ubuntu/deepdiff?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.1.1-3
8.1.1-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-deepdiff",
            "binary_version": "8.1.1-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33155.json"

Ubuntu:26.04:LTS / deepdiff

Package

Name
deepdiff
Purl
pkg:deb/ubuntu/deepdiff?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

8.*
8.1.1-4
8.6.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-deepdiff",
            "binary_version": "8.6.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33155.json"