Cyber Resilience

CVE-2026-5783

High

Published: 20 May 2026

Published
20 May 2026
Modified
20 May 2026
KEV Added
—
Patch
—
CVSS Score v3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
EPSS Score 0.0022 13.0th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-5783 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Gov (inferred from references). Its CVSS base score is 7.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Beyaz Computer Software Design Industry and Trade Ltd. Co. CityPLus allows Reflected XSS. This issue affects CityPLus: before V24.29750.1.0.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Reflected XSS in a web application directly enables exploitation of a public-facing app (T1190).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

CVEs Like This One

CVE-2025-24616Shared CWE-79
CVE-2026-21873Shared CWE-79
CVE-2025-68520Shared CWE-79
CVE-2024-56299Shared CWE-79
CVE-2025-22353Shared CWE-79
CVE-2026-3718Shared CWE-79
CVE-2025-49043Shared CWE-79
CVE-2026-42734Shared CWE-79
CVE-2025-26552Shared CWE-79
CVE-2025-49045Shared CWE-79

Affected Assets

Gov
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References