CVE-2026-3498Disclosure

LOWCVSS 6.4 · 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 BlockArt Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'clientId' block attribute in all versions up to, and including, 2.2.15. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

1.5/ 10 priority

Sources & remediation

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 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-11); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-11: 1Mentions · 2026-04-18: 1PoC Mentioned / Linked · 2026-04-18: 1Technical Details · 2026-04-11: 104-1104-18
Signal classification2 categories
Disclosure
150.0%
PoC
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-111
Disclosure1
2026-04-181
PoC1
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-3498 The BlockArt Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'clientId' block attribute in all versions up to, and including, 2.2.15. T… https://www.cve.org/CVERecord?id=CVE-2026-3498

    Post summary

    CVE‑2026‑3498 is a stored XSS flaw in the BlockArt Blocks WordPress plugin that affects all versions up to 2.2.15 via the 'clientId' block attribute.

    00010125
    57.1K followersView on X
  • Atomic Edge@atomicedgeWAF
    PoC

    https://atomicedge.io/cve-proof/cve-2026-3498-blockart-blocks-version-2-2-15-medium-vulnerability-proof-of-concept CVE-2026-3498 #WordPress plugin #vulnerability blockart-blocks #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecurity #atomicedge

    Post summary

    The post shares a proof‑of‑concept for CVE‑2026‑3498 affecting the BlockArt Blocks plugin, but lacks exploit code, active exploitation evidence, patch details, or technical specifics.

    0000042
    6 followersView on X

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