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PHP CVE-2026-3043

LOW
Cross-site Scripting (XSS) (CWE-79)
2026-02-24 cna@vuldb.com
PHP XSS
2.1
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
2.1 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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:N/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
None
User Interaction
P
Scope
X

Lifecycle Timeline

5
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
4.3 (MEDIUM) 2.1 (LOW)
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Feb 24, 2026 - 18:12 vuln.today
Public exploit code
CVE Published
Feb 24, 2026 - 00:16 nvd
MEDIUM 4.3

DescriptionCVE.org

A flaw has been found in itsourcecode Event Management System 1.0. The impacted element is an unknown function of the file /admin/navbar.php. Executing a manipulation of the argument page can lead to cross site scripting. The attack may be performed from remote. The exploit has been published and may be used.

AnalysisAI

Reflected cross-site scripting in itsourcecode Event Management System 1.0 allows unauthenticated remote attackers to inject malicious scripts via the page parameter in /admin/navbar.php. Public exploit code exists for this vulnerability, enabling attackers to steal session tokens or perform actions on behalf of administrators. …

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Vulnerability AssessmentAI

Risk Assessment CVSS 4.3 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A remote attacker (requires authentication) could exploit this vulnerability to cross site scripting.
Remediation Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-3043 vulnerability details – vuln.today
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