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Back to active CVEs
High · CVSS 8.8CVE-2026-66602

WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability

Answer in brief

CVE-2026-66602 records a High severity (CVSS 8.8) vulnerability in WordPress HashBar – WordPress Notification Bar plugin <= 2.0.0 - Cross Site Request Forgery (CSRF) vulnerability. The current sources do not mark it as known exploited. The current feed maps DevItems/HashBar – WordPress Notification Bar (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 18, 2026Updated Aug 20, 2026Source checked Oct 3, 2026First seen by HOL Aug 18, 2026Material review Aug 20, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps DevItems/HashBar – WordPress Notification Bar (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
DevItems/HashBar – WordPress Notification Bargenericn/aNot reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for DevItems/HashBar – WordPress Notification Bar.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 20, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 18, 2026

Sources and claim methodology

  • Source referencepatchstack.com
Upstream source description

Cross-Site Request Forgery (CSRF) vulnerability in DevItems HashBar – WordPress Notification Bar allows Cross Site Request Forgery. This issue affects HashBar – WordPress Notification Bar: from n/a through 2.0.0.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress Wallstreet theme <= 2.8.6 - Cross Site Request Forgery (CSRF) vulnerabilityAlso CWE-352
  • CodeArt Google MP3 Audio Player 1.0.11 Arbitrary File Read via direct_download.phpSame generic ecosystem
  • Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFileSame generic ecosystem
  • H3C CVM Unauthenticated File Upload via fileUpload/upload TokenSame generic ecosystem
  • @orpc/json-schema: Prototype injection in smart coercionSame generic ecosystem
  • @orpc/zod: Prototype injection in smart coercionSame generic ecosystem

Record context

Vulnerability class
CSRF
EPSS
Not reported
CWE IDs
CWE-352
Source
CVE List V5
Source checked
Oct 3, 2026
References
1 linked source
Open source record