EUVD-2026-26417Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/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 NVD · only source for this CVE.
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/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
Lifecycle Timeline
6DescriptionCVE.org
SSCMS v7.4.0 contains a reflected cross-site scripting vulnerability in the STL processing endpoint that allows attackers to execute arbitrary JavaScript by crafting malicious STL template payloads that are decrypted and returned without proper sanitization. Attackers can exploit improper output encoding in the /api/stl/actions/dynamic endpoint to inject executable JavaScript into JSON responses, leading to session hijacking, phishing attacks, and unauthorized actions performed on behalf of users.
AnalysisAI
Reflected cross-site scripting in SSCMS v7.4.0 allows authenticated attackers to inject arbitrary JavaScript through crafted STL template payloads in the /api/stl/actions/dynamic endpoint. The vulnerability arises from improper output encoding when decrypted STL templates are returned in JSON responses, enabling session hijacking, credential theft via phishing, and unauthorized user actions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | An attacker must have valid authentication credentials to access the /api/stl/actions/dynamic endpoint (PR:L in CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 4.6 (medium) with network vector (AV:N), low complexity (AC:L), and low authentication barrier (PR:L) indicates the vulnerability is accessible to any authenticated user without special configuration. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated attacker crafts a malicious STL template payload containing JavaScript (e.g., `<img src=x onerror=alert('XSS')>`) and submits it to the /api/stl/actions/dynamic endpoint. The server decrypts the payload and returns it in a JSON response without encoding. … |
| Remediation | Apply output encoding (HTML entity encoding or JSON-safe escaping) to all decrypted STL template content before returning it in JSON responses from the /api/stl/actions/dynamic endpoint. … Detailed patch versions, workarounds, and compensating controls in full report. |
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