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DedeCMS CVE-2026-19353

| EUVDEUVD-2026-54921 LOW
External Control of File Name or Path (CWE-73)
2026-08-09 VulDB GHSA-qg5x-jc32-6g34
PHP Information Disclosure Dedecms
1.3
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
1.3 LOW
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
vuln.today AI
5.0 MEDIUM

Network-accessible install wizard requires low privileges and high complexity; limited CIA impact with no scope change to other systems.

3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Aug 09, 2026 - 13:36 vuln.today
CVSS changed
Aug 09, 2026 - 13:22 NVD
2.3 (LOW) 1.3 (LOW)
CVE Published
Aug 09, 2026 - 12:45 cve.org
LOW 1.3

DescriptionCVE.org

A vulnerability has been found in DedeCMS up to 5.7.118 UTF8SP2. The affected element is the function _4_Setup of the file install/index.php of the component Installation Wizard. Such manipulation leads to file inclusion. The attack can be executed remotely. This attack is characterized by high complexity. The exploitability is described as difficult. The exploit has been disclosed to the public and may be used.

AnalysisAI

File inclusion in DedeCMS up to 5.7.118 UTF8SP2 allows a remote attacker with low privileges and high-complexity conditions to include arbitrary files via the _4_Setup function within the Installation Wizard (install/index.php). Exploitation results in limited confidentiality, integrity, and availability impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate with low-privilege account
Delivery
Confirm install/index.php is accessible post-installation
Exploit
Craft malicious file path parameter targeting _4_Setup function
Execution
Trigger file inclusion via HTTP request
Impact
Read restricted file contents or influence application state
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Vulnerability AssessmentAI

Exploitation The Installation Wizard (install/index.php) must remain accessible on the target server - in properly hardened DedeCMS deployments this directory is removed post-installation, which alone eliminates the attack surface. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L) and corresponding score of 1.3 place this at the extreme low end of the severity scale. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with low-level authenticated access to a DedeCMS instance where the install/ directory remains accessible crafts a request to install/index.php targeting the _4_Setup function, manipulating a file path parameter to reference a server-side file outside the intended scope. If exploitation conditions are met, the attacker can read restricted file contents or, depending on included file content, potentially influence application behavior. …
Remediation No vendor-released patched version has been independently confirmed from available data. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-19353 vulnerability details – vuln.today
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