CVE-2026-55220

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-55220
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55220.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55220
Aliases
Published
2026-08-28T19:12:43Z
Modified
2026-09-11T03:30:44Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column
Details

Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.19, 12.3.10, and 2026.1.6, Pimcore\Model\DataObject\ClassDefinition\Data\Hotspotimage::getDataFromResource() in models/DataObject/ClassDefinition/Data/Hotspotimage.php passes the field __hotspots object-store column to Pimcore\Tool\Serialize::unserialize() without an allowed-classes restriction after JSON decoding fails. An attacker with a separate capability to write crafted PHP serialized bytes into that column can instantiate available classes and trigger magic methods when an affected DataObject is loaded, which can produce arbitrary file writes or code execution through bundled gadget chains. The related ImageGallery, Block, and Video callers use the same fallback pattern, but the identified June fix changes the Hotspotimage caller only. This issue is fixed for Hotspotimage in versions 11.5.19, 12.3.10, and 2026.1.6.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55220.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "11.5.19"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/pimcore/pimcore

Affected ranges

Type
GIT
Repo
https://github.com/pimcore/pimcore
Events
Introduced
337f64f750298cf6d55c01c95bc9a7413e41d7d0
Introduced
37c14edb2693c4632187e2e78b6915c62af43042
Fixed
71b2af87d1a50027d7a59cb9f41da1ef807d892f
Fixed
ad60bad41946c33bebb4fd42e03b0a575759de02
Fixed
b184c01bf11e213e601d965b4e96c8bb7248e980
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "12.0.0-RC1"
        },
        {
            "fixed": "12.3.10"
        },
        {
            "introduced": "2026.1.0"
        },
        {
            "fixed": "2026.1.6"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v12.*
v12.0.0
v12.0.0-RC1
v12.0.0-RC2
v12.1.0
v12.2.0
v12.2.1
v12.3.0
v12.3.1
v12.3.1.1
v12.3.2
v12.3.3
v12.3.4
v12.3.5
v12.3.7
v12.3.8
v12.3.9
v2026.*
v2026.1.0
v2026.1.1
v2026.1.2
v2026.1.3
v2026.1.4
v2026.1.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55220.json"