CVE-2021-40102
CRITICALConcrete CMS < 8.5.5 - Arbitrary File Deletion via PHAR Deserialization
Title source: llmDescription
An issue was discovered in Concrete CMS through 8.5.5. Arbitrary File deletion can occur via PHAR deserialization in is_dir (PHP Object Injection associated with the __wakeup magic method).
References (2)
Core 2
Core References
Permissions Required, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/921288
Release Notes, Vendor Advisory x_refsource_misc
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
Scores
CVSS v3
9.1
EPSS
0.0131
EPSS Percentile
66.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Details
CWE
CWE-502
Status
published
Products (1)
concretecms/concrete_cms
< 8.5.5
Published
Sep 24, 2021
Tracked Since
Feb 18, 2026