VulnSocial

CVE-2026-0561Disclosure

LOWCVSS 6.1 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

The Shield Security plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'message' parameter in all versions up to, and including, 21.0.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

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1.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Public PoC is present in monitored signal
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 1 mentions (2026-02-19); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-02-19: 1Mentions · 2026-09-07: 1PoC Mentioned / Linked · 2026-09-07: 1Technical Details · 2026-02-19: 1Technical Details · 2026-09-07: 102-1909-07
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • pdnuclei-bot@pdnuclei_bot
    Disclosure

    🚨 CVE-2026-0561 - medium 🚨 Shield Security <= 21.0.8 - Unauthenticated Reflected XSS > Shield Security WordPress plugin <= 21.0.8 contains a reflected cross-site scripting ... 👾 https://cloud.projectdiscovery.io/library/CVE-2026-0561 @pdnuclei #NucleiTemplates #cve

    Post summary

    The tweet announces CVE‑2026‑0561 as a medium‑severity unauthenticated reflected XSS in Shield Security plugin versions ≤21.0.8, linking to a resource (likely a Nuclei PoC template) for detection.

    00041399
    1.3K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-0561 The Shield Security plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'message' parameter in all versions up to, and including, 21.0.8 due to… https://www.cve.org/CVERecord?id=CVE-2026-0561

    Post summary

    Shield Security plugin for WordPress contains a reflected XSS vulnerability in the 'message' parameter (CVE‑2026‑0561) affecting all versions up to 21.0.8.

    00000105
    56.4K followersView on X

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