What is the CVSS score of CVE-2026-3819?

CVE-2026-3819 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. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-3819?

Yes, a public proof-of-concept exploit is available for CVE-2026-3819. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-3819?

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

Resort Reservation System CVE-2026-3819

LOW

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

2026-03-09 cna@vuldb.com

XSS Resort Reservation System Oretnom23

2.0

CVSS 4.0 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-79 OWASP Top 10:2025 A03:2021 - Injection ASVS 5.0 V5 - Validation, Sanitization and Encoding Input validation, output encoding, parameterized queries MITRE ATT&CK 2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 3.5 (LOW). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: Required. Exploitable via remote/network. Public exploit/POC available.
Exploit ScenarioDerived	A remote attacker could exploit this flaw, cross site scripting.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Resort Reservation System. A vulnerability has been found in SourceCodester Resort Reservation System 1.0. The affected element is an unknown function of the file /?page=manage_reservation of the component Reservation Management Module. Such manipulation of the argument ID leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

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Exploit and PoC references, threat intelligence from 22 sources

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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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

Low

User Interaction

Passive

Vulnerable system: Confidentiality

None

Vulnerable system: Integrity

Low

Vulnerable system: Availability

None

Subsequent system: Confidentiality

None

Subsequent system: Integrity

None

Subsequent system: Availability

None

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

3.5 (LOW) 2.0 (LOW)

PoC Detected

Mar 09, 2026 - 14:47 vuln.today

Public exploit code

CVE Published

Mar 09, 2026 - 13:15 nvd

LOW 3.5

DescriptionCVE.org

A vulnerability has been found in SourceCodester Resort Reservation System 1.0. The affected element is an unknown function of the file /?page=manage_reservation of the component Reservation Management Module. Such manipulation of the argument ID leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Executive ViewAI

Why It Matters

CVE-2026-3819 is a low-severity vulnerability in A vulnerability involving cross-site scripting (CVSS 3.5). The limited severity suggests constrained impact, typically requiring specific conditions or local access for exploitation. Apply vendor updates when available as part of routine maintenance.

Business Impact: Low

Compensating Controls

Apply vendor patch during routine maintenance. Standard cross-site scripting mitigations apply if patching is delayed.

Threat Intelligence Overview

EPSS Score

0.0%

Top 91% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity LOW

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

LOW severity (CVSS 0.1-3.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.