What is the CVSS score of EUVD-2026-37559?

EUVD-2026-37559 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.2%.

Which versions of Taskbuilder are affected by EUVD-2026-37559?

The Taskbuilder WordPress plugin (versions before 5.0.8) contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious JavaScript into users'…. A patch is available.

Is there a public PoC exploit available for EUVD-2026-37559?

Yes, a public proof-of-concept exploit is available for EUVD-2026-37559. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate EUVD-2026-37559?

Within 24 hours, audit all WordPress installations using Taskbuilder plugin to identify affected versions. Within 7 days, update all instances to Taskbuilder version 5.0.8 or later to apply the vendor-released patch. Within 30 days, review authentication and access logs on affected systems for exploitation attempts, audit user sessions for unauthorized activity, and validate patch deployment across the entire WordPress environment.

Taskbuilder EUVD-2026-37559

| CVE-2026-9570 HIGH

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

2026-06-17 WPScan

XSS WordPress Taskbuilder

7.1

CVSS 3.1 · CISA-ADP

Severity by source

CISA-ADP PRIMARY

7.1 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Primary rating from CISA-ADP · only source for this CVE.

CVSS VectorCISA-ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Jul 22, 2026 - 21:20 vuln.today

Patch available

Jun 17, 2026 - 09:01 EUVD

CVE Published

Jun 17, 2026 - 06:00 cve.org

HIGH 7.1

CVE Published

Jun 17, 2026 - 06:00 cve.org

UNKNOWN (no severity yet)

DescriptionCVE.org

The Taskbuilder WordPress plugin before 5.0.8 does not properly sanitise a URL parameter before echoing it into inline JavaScript on a frontend page containing one of its shortcodes, leading to a Reflected Cross-Site Scripting vulnerability that can be triggered against any logged-in user.

AnalysisAI

Reflected cross-site scripting in the Taskbuilder WordPress plugin before 5.0.8 lets an unauthenticated attacker inject arbitrary JavaScript by tricking a logged-in user into visiting a crafted URL. The plugin echoes an unsanitised URL parameter directly into inline JavaScript on any frontend page that renders one of its shortcodes, so the payload executes in the victim's authenticated browser session. Publicly available exploit code exists (WPScan), though EPSS remains low (0.18%) and the flaw is not in CISA KEV.