EUVD-2026-78837
GHSA-rc56-pff2-6crm
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/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
Primary rating from Vendor (ConcreteCMS) · only source for this CVE.
CVSS VectorVendor: ConcreteCMS
Lifecycle Timeline
2DescriptionCVE.org
In Concrete CMS before 9.5.3, the Document Library block stored the file-set identifiers submitted through fsID[] without validating them as integers, and when the block was configured with setMode set to any it concatenated each stored identifier directly into the file-set filter query instead of casting it or binding it as a parameter. An authenticated user permitted to add or edit a Document Library block could therefore persist SQL syntax in the block configuration (btDocumentLibrary.setIds), and that stored expression was executed every time the published page containing the block was rendered, producing stored, time-based blind SQL injection. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 8.5 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks Habib Allah for reporting.
AnalysisAI
Stored SQL injection in Concrete CMS 9.5.2 and earlier lets an authenticated user who is permitted to add or edit a Document Library block persist arbitrary SQL syntax into the block's stored configuration (btDocumentLibrary.setIds), which is then executed every time the published page containing that block is rendered. The flaw arises because the fsID[] file-set identifiers submitted by the block editor are stored without integer validation and are concatenated directly into the file-set filter query when setMode is 'any' instead of being cast or parameter-bound. …
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Recommended ActionAI
Within 24 hours, inventory all Concrete CMS deployments, confirm which are running 9.5.2 or earlier, and restrict the ability to create or edit Document Library blocks to the smallest possible set of trusted administrators while auditing recent block edits for the btDocumentLibrary.setIds configuration value for unexpected SQL syntax. …
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External POC / Exploit Code
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