> CVE-2026-55220 [CRITICAL]

« BACK_TO_HOME
PUBLISHED
2026-08-28 20:18
MODIFIED
2026-08-28 20:18
CVSS_SCORE V3
9.3
EPSS (Prob. Exploit)
0.68%
Top 48.6%
DATA SOURCES:
NVD đź”— 2026-08-28 CWE MITRE đź”— 2026-09-01 FIRST EPSS đź”— 2026-10-18 GITHUB đź”— 2026-10-15 OSV đź”— 2026-10-26

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-502

> CWE DETAILED DESCRIPTIONS

CWE-502: Deserialization of Untrusted Data - The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

> GITHUB SECURITY ADVISORY

GHSA-w23p-wrp7-ch38 CRITICAL

Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column (PHP Object Injection, CWE-502)

AFFECTED PACKAGES:
COMPOSER / pimcore/pimcore
<= 12.3.9
Fixed in: 12.3.10
COMPOSER / pimcore/pimcore
>= 2026.1.0, <= 2026.1.5
Fixed in: 2026.1.6

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column

AFFECTED PACKAGES:
Unknown / Unknown
22 versions affected
ALIASES:
GHSA-w23p-wrp7-ch38

> HISTORIQUE DES MODIFICATIONS

Première apparition
28/08/2026 20:18
Source: NVD
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-502: Deserialization of Untrusted Data - The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Total des modifications: 1 Dernière mise à jour: 1 month ago

> REFERENCES

https://github.com/pimcore/pimcore/commit/b184c01bf11e213e601d965b4e96c8bb7248e9...
https://github.com/pimcore/pimcore/pull/19181
https://github.com/pimcore/pimcore/releases/tag/v12.3.10
https://github.com/pimcore/pimcore/releases/tag/v2026.1.6
https://github.com/pimcore/pimcore/security/advisories/GHSA-w23p-wrp7-ch38
« BACK_TO_HOME