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Online Job Portal CVE-2026-77681

| EUVDEUVD-2026-63876 LOW
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-08-21 VulDB GHSA-r4gg-7w38-fj4j
PHP File Upload Online Job Portal
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: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
9.9 CRITICAL

Network-exploitable after authentication (PR:L); scope changes to server if PHP webshell executes, yielding full C/I/A:H impact - official VC:L scoring not independently verifiable.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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: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
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Analysis Generated
Aug 21, 2026 - 10:36 vuln.today
Severity Changed
Aug 21, 2026 - 10:22 NVD
MEDIUM LOW
CVSS changed
Aug 21, 2026 - 10:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
CVE Published
Aug 21, 2026 - 09:45 cve.org
LOW 2.1

DescriptionCVE.org

A vulnerability was identified in CodeAstro Online Job Portal 1.0. Affected by this vulnerability is an unknown functionality of the file /users/update-profile.php. The manipulation of the argument Name leads to unrestricted upload. The attack can be initiated remotely. The exploit is publicly available and might be used.

AnalysisAI

Unrestricted file upload in CodeAstro Online Job Portal 1.0 allows authenticated remote attackers to upload arbitrary files via the Name argument in /users/update-profile.php. Exploitation requires a valid user account, after which an attacker can bypass file type restrictions on profile update functionality. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Obtain valid user account credentials
Delivery
Authenticate to job portal
Exploit
Craft malicious multipart upload request with PHP webshell payload
Install
Manipulate Name parameter to bypass file type validation
C2
Upload executes in web-accessible directory
Execute
Request uploaded webshell URL
Impact
Achieve remote code execution
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated user account on the CodeAstro Online Job Portal instance (PR:L per the provided CVSS 4.0 vector), meaning self-registration must be enabled or the attacker must obtain credentials through other means. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Multiple signals present a conflicting picture. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker registers or obtains credentials for a user account on the job portal, then navigates to the profile update page and manipulates the Name argument in the file upload request to bypass extension or MIME type checks, uploading a PHP webshell. If the upload directory permits PHP execution, the attacker directly requests the uploaded file's URL to achieve remote code execution on the web server. …
Remediation No vendor-released patch has been identified at time of analysis - no patched version number appears in the provided references or CPE data. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-77681 vulnerability details – vuln.today
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