Is there a patch available for EUVD-2026-30279?

Yes, a patch is available for EUVD-2026-30279. Update the affected software to the latest version immediately.

WEBCON BPS EUVD-2026-30279

Q: What is the CVSS score of EUVD-2026-30279?

EUVD-2026-30279 has a CVSS 4.0 base score of 5.1 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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: 0.1%.

| CVE-2026-1630 MEDIUM

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

2026-05-14 CERT-PL

GHSA-r6h3-9v4w-m3wg

XSS Webcon Bps

5.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.1 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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

Scope

Lifecycle Timeline

Analysis Generated

May 14, 2026 - 16:30 vuln.today

Patch available

May 14, 2026 - 15:01 EUVD

CVSS changed

May 14, 2026 - 14:22 NVD

5.1 (MEDIUM)

CVE Published

May 14, 2026 - 13:24 nvd

MEDIUM 5.1

CVE Published

May 14, 2026 - 13:24 nvd

UNKNOWN (no severity yet)

DescriptionCVE.org

WEBCON BPS is vulnerable to Reflected XSS via one of parameters used by "/openinmobileapp" endpoint. An attacker can send a specially crafted URL that, when opened by an authenticated user, results in arbitrary JavaScript execution in the victim's browser.

This issue was fixed in versions 2026.1.3.109 and 2025.2.1.293.

AnalysisAI

Reflected XSS in WEBCON BPS via the '/openinmobileapp' endpoint allows unauthenticated attackers to inject arbitrary JavaScript that executes in authenticated users' browsers when a crafted URL is opened. The vulnerability requires user interaction (clicking a link) but impacts session confidentiality and integrity. Vendor-released patches are available for versions 2026.1.3.109 and 2025.2.1.293.

Technical ContextAI

WEBCON BPS is a business process management platform. The '/openinmobileapp' endpoint fails to properly sanitize user-supplied parameters before reflecting them in HTTP responses, violating the principle of output encoding. This is a classic Reflected XSS vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation). The CVSS 4.0 vector indicates network-accessible attack surface (AV:N), low attack complexity (AC:L), and user interaction requirement (UI:A) - the user must click the malicious link. The impact is limited to the authenticated user's session scope (SC:L), affecting session integrity (SI:L) but not system-wide confidentiality or availability.

RemediationAI

Upgrade WEBCON BPS to version 2026.1.3.109 or later for the 2026 release line, or to version 2025.2.1.293 or later for the 2025 release line. Patches are available via the WEBCON community download portal (https://community.webcon.com/download/changelog/398 and https://community.webcon.com/download/changelog/394). No interim workarounds are documented. To mitigate risk during patching windows, restrict network access to WEBCON BPS administrative interfaces, disable user sharing of URLs to '/openinmobileapp' endpoints (via user awareness or network controls), and monitor server logs for suspicious parameter values in requests to this endpoint.