TI-2026-03208 Aliases CVE-2026-3718 GHSA-vfvf-2h2w-cj9j

ManageWP Worker <= 4.9.31 - Unauthenticated Stored Cross-Site Scripting via 'MWP-Key-Name' Header

LOW 37CWE-79Published 2026-05-14 · Updated 2026-05-14

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The ManageWP Worker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'MWP-Key-Name' HTTP request header in all versions up to, and including, 4.9.31. This is due to insufficient input sanitization and output escaping of attacker-controlled header values. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever an administrator visits the plugin's connection management page with debug parameters.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00264 18th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ManageWP	ManageWP Worker	up to 4.9.31	—	No fix listed	CNA

ManageWP Worker VendorManageWP Affected up to 4.9.31 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-3718
2026-10-03 Alias added: GHSA-vfvf-2h2w-cj9j

References

Other 2

TI-2024-10107 Broken Link Checker < 2.4.2 - Admin+ SSRF CVSS 3.1MEDIUM 4.7
TI-2022-03597 Broken Link Checker < 1.11.20 - Admin+ Cross-Site Scripting CVSS 3.1MEDIUM 4.8
TI-2023-09550 WordPress MainWP Broken Links Checker Extension Plugin <= 4.0 is vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
TI-2022-02252 Broken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR Deserialization CVSS 3.1HIGH 7.2
TI-2026-28437 WordPress ManageWP Worker plugin <= 4.9.31 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
TI-2019-12386 The broken-link-checker plugin through 1.11.8 for WordPress (aka Broken Link Checker) is… CVSS 3.1MEDIUM 6.1

See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences