Which versions of Online Examination System are affected by CVE-2026-1421?

CVE-2026-1421 is a low-severity vulnerability in A vulnerability involving cross-site scripting (CVSS 3.5).

Is there a public PoC exploit available for CVE-2026-1421?

Yes, a public proof-of-concept exploit is available for CVE-2026-1421. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-1421?

During next maintenance window: Apply vendor patches when convenient. Verify cross-site scripting controls are in place.

Online Examination System CVE-2026-1421

Q: What is the CVSS score of CVE-2026-1421?

CVE-2026-1421 has a CVSS 4.0 base score of 2.0 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/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. EPSS exploitation probability: 0.0%.

LOW

Cross-site Scripting (XSS) (CWE-79)

2026-01-26 cna@vuldb.com

XSS Online Examination System

2.0

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.0 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/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

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

3.5 (LOW) 2.0 (LOW)

Analysis Generated

Mar 12, 2026 - 22:00 vuln.today

PoC Detected

Jan 28, 2026 - 14:24 vuln.today

Public exploit code

CVE Published

Jan 26, 2026 - 06:16 nvd

LOW 3.5

DescriptionCVE.org

A vulnerability has been found in code-projects Online Examination System 1.0. Affected is an unknown function of the component Add Pages. Such manipulation leads to cross site scripting. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

A vulnerability has been found in code-projects Online Examination System 1.0. Affected is an unknown function of the component Add Pages. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 3.5 (LOW). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker could exploit this flaw, cross site scripting.
Remediation	Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

During next maintenance window: Apply vendor patches when convenient. …

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CVE-2026-1421 vulnerability details – vuln.today

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