EUVD-2026-41759
GHSA-v8j5-g875-7qj3
Severity by source
CVSS:4.0/AV:N/AC:L/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-exposed endpoint requires no privileges or interaction; low CIA impact scoped to student record data only.
Primary rating from Vendor (vuldb).
CVSS VectorVendor: vuldb
CVSS:4.0/AV:N/AC:L/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
1DescriptionCVE.org
A vulnerability was detected in mjperpinosa stumasy up to 327d1b0f2915ba79d7ef8ebb74553e987609d9be. This impacts an unknown function of the file /PHP/objects/notes of the component Note Handler/Assignment Handler. Performing a manipulation of the argument assignment_item_id results in authorization bypass. The attack can be initiated remotely. The exploit is now public and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Authorization bypass in stumasy, a PHP-based student management system, exposes the Note Handler and Assignment Handler endpoints at /PHP/objects/notes to unauthenticated remote exploitation by manipulating the assignment_item_id parameter. The flaw (CWE-285: Improper Authorization) allows an attacker to read, modify, or otherwise interact with notes and assignment records belonging to other users without possessing the required authorization. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required - the vulnerability exists in the default deployment of stumasy against the /PHP/objects/notes endpoint, which the CVSS 4.0 vector (PR:N/UI:N/AC:L/AT:N) confirms is reachable without authentication or user interaction. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base vector (AV:N/AC:L/AT:N/PR:N/UI:N) with all-L impact metrics and the E:P threat score yields the reported 5.5 score, which accurately reflects limited but real risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated remote attacker sends a crafted HTTP request to /PHP/objects/notes with a manipulated assignment_item_id value (e.g., incrementing integer IDs) to enumerate and read or modify notes and assignment records belonging to other students. Because a public proof-of-concept exists and the attack complexity is low, this can be scripted to bulk-harvest all records in the system. … |
| Remediation | No vendor-released patch has been identified at time of analysis; the maintainer was informed via a GitHub issue (https://github.com/mjperpinosa/stumasy/issues/9) but has not responded. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-285 – Improper Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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