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Class and Exam Timetabling System CVE-2026-78115

| EUVDEUVD-2026-64646 LOW
Improper Authorization (CWE-285)
2026-08-23 VulDB GHSA-wjrw-j976-xf8g
PHP Authentication Bypass Class And Exam Timetabling System
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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
5.4 MEDIUM

Network-reachable PHP endpoint requires only a low-privilege session (PR:L); no scope change; integrity and availability both low from unauthorized account modification.

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

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Severity Changed
Aug 23, 2026 - 10:22 NVD
MEDIUM LOW
CVSS changed
Aug 23, 2026 - 10:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
Analysis Generated
Aug 23, 2026 - 10:20 vuln.today
CVE Published
Aug 23, 2026 - 09:45 cve.org
MEDIUM 5.3

DescriptionCVE.org

A vulnerability has been found in SourceCodester Class and Exam Timetabling System 1.0. Affected is an unknown function of the file /admin/edit_user_account.php of the component User Account Update. Such manipulation of the argument id/username leads to improper authorization. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

Improper authorization in SourceCodester Class and Exam Timetabling System 1.0 allows a low-privileged authenticated attacker to manipulate the id or username parameters in /admin/edit_user_account.php to modify user accounts they do not own or administer. The flaw is rooted in missing access control checks on the User Account Update endpoint, enabling horizontal or vertical privilege escalation by forging parameter values. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privilege account credentials
Delivery
Authenticate to the timetabling application
Exploit
Enumerate target admin account id or username
Execution
Send crafted POST request to /admin/edit_user_account.php with forged id/username
Persist
Overwrite target account details
Impact
Achieve unauthorized account control
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Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated session with at least a low-privilege account on the Class and Exam Timetabling System 1.0 instance - confirmed by CVSS PR:L. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N) scores 5.3 and reflects low complexity and no attack requirements beyond a low-privilege session, with limited integrity and availability impact (VI:L/VA:L) and no confidentiality exposure. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or obtains a low-privilege account on the timetabling system, then crafts a direct HTTP request to `/admin/edit_user_account.php` with a manipulated `id` or `username` parameter targeting an administrator account. Because the endpoint does not verify session ownership of the targeted record, the attacker can overwrite the administrator's credentials or account details, effectively hijacking the admin account and gaining full control of the application. …
Remediation No vendor-released patch has been identified at time of analysis - SourceCodester distributes this as a free script and has not published a security advisory with a fixed version. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-78115 vulnerability details – vuln.today
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