EUVD-2026-40026
GHSA-p5fh-85g9-4mc9
Severity by source
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/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
Network-reachable install endpoint requires no auth (PR:N) but high complexity per description; impact limited to partial CIA consistent with CVSS 4.0 VC:L/VI:L/VA:L with no scope change.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/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
Lifecycle Timeline
3DescriptionCVE.org
A vulnerability was determined in YzmCMS up to 7.5. This affects an unknown function of the file /application/install/index.php. Executing a manipulation of the argument siteurl can lead to sql injection. The attack can be executed remotely. A high complexity level is associated with this attack. The exploitability is reported as difficult. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
SQL injection in YzmCMS up to version 7.5 allows network-based attackers to manipulate database queries by supplying crafted input to the siteurl argument within the installation endpoint /application/install/index.php. No authentication is required per the CVSS 4.0 vector (PR:N), though the attack is rated high complexity (AC:H), meaning exploitation is non-trivial despite a publicly available proof-of-concept on GitHub. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target must be running YzmCMS version 7.5 or earlier. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 6.3 reflects a network-reachable vector (AV:N) with no authentication required (PR:N) and no user interaction (UI:N), but critically high attack complexity (AC:H) and all-Low impact ratings (VC:L/VI:L/VA:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker scans for YzmCMS installations where /application/install/index.php remains publicly accessible after deployment - a common oversight on shared hosting or quickly provisioned instances. Using the publicly available proof-of-concept at https://github.com/drose025/security/blob/main/1.md, the attacker submits a crafted HTTP request with a malicious siteurl parameter containing SQL injection payloads, causing the backend query to return database contents such as admin credentials or configuration data. … |
| Remediation | No vendor-released patch has been identified at time of analysis - the vendor was contacted prior to disclosure and did not respond, leaving no official fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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