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HashBar Notification Bar CVE-2026-94117

| EUVDEUVD-2026-84342 HIGH
SQL Injection (CWE-89)
2026-09-22 Patchstack GHSA-6p3p-qw9j-cqcr
7.6
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain high-privilege WordPress account
  2. Delivery
    Reach vulnerable HashBar plugin parameter
  3. Exploit
    Inject blind SQL payload
  4. Execution
    Infer data via boolean/time responses
  5. Impact
    Exfiltrate database records

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires an authenticated WordPress session with high privileges (PR:H - an administrator or equivalent role able to reach the affected HashBar parameter) on a site running HashBar - WordPress Notification Bar version 2.0.3 or earlier. No user interaction is needed (UI:N) and the injection point is network-reachable, but exploitation is limited by the high-privilege authentication requirement and by the blind (inference-based) nature of the injection, which makes data extraction slow. Impact escalates to a separate system (S:C) only where the plugin's SQL executes against a database shared with other applications or holding secrets beyond the WordPress install.

Impact

The Patchstack-assigned CVSS 3.1 vector (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L, 7.6) is the only quantitative signal available - there is no EPSS score, no CISA KEV listing, no SSVC decision data, and no public exploit code referenced. The single most risk-limiting metric is PR:H: the blind SQL injection requires an already-authenticated high-privilege account (effectively an administrator or equivalent role that can reach the vulnerable plugin parameter), which sharply narrows the realistic threat to insider misuse, compromised-credential scenarios, or a chained privilege escalation. Given PR:H, the practical value of a raw SQLi here is modest - an admin can already read much of the site - so C:H mainly matters where the database holds secrets beyond WordPress (e.g., shared/multi-tenant DBs), which is why S:C (scope-changed to the database engine) is defensible. This is a genuine but NOT top-priority issue: high CVSS number driven by S:C/C:H, but the PR:H gate and absence of any exploitation evidence make it a patch-in-normal-cycle item rather than an emergency. Missing data explicitly noted: no EPSS, no KEV, no POC, and the exact vulnerable endpoint/parameter is not disclosed in the description (blind SQLi implies time/boolean-based inference).

Exploit ScenarioDerived

An authenticated high-privilege WordPress user (or an attacker who has captured such credentials) submits a crafted value to a HashBar plugin parameter that is concatenated into a SQL statement without neutralization, then uses boolean/time-based blind inference to extract database contents. No public proof-of-concept is referenced, and exploitation is bounded by the required high-privilege access and the slow, inference-based nature of blind SQLi.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 22, 2026

Blind SQL injection in the DevItems HashBar - WordPress Notification Bar plugin, affecting all versions through 2.0.3, lets an attacker who already holds a high-privilege WordPress session inject crafted SQL through a plugin parameter and infer database contents one bit at a time. Because the CVSS vector is PR:H, exploitation requires an administrator-equivalent account (or a role able to reach the affected HashBar parameter) rather than anonymous access, and the inference-based (blind) nature of the flaw means extraction is slow and noisy rather than a single-shot dump. There is no CISA KEV listing, no EPSS score, and no public exploit code referenced, so this is a post-authentication risk that is elevated mainly on sites where over-privileged accounts are shared or where the WordPress database holds data belonging to other applications - the vector's S:C scope change only materializes in that shared-database scenario.

RemediationAI

No vendor-released patch or fixed version is identified in the available data - the only reference is the Patchstack advisory for 2.0.3, which does not state a corrected release, so verify the current plugin version and any newer changelog directly with DevItems before assuming a fix is available. Until a patched build is confirmed, the most effective compensating control is to disable or deactivate the HashBar - WordPress Notification Bar plugin if its notification bar functionality is not required, which removes the injection surface entirely at the cost of losing the notification feature. If the plugin must stay active, enforce strict least privilege: audit WordPress roles and remove administrator-level access from any account that does not genuinely need it, since exploitation requires PR:H credentials, and rotate credentials or sessions for accounts that may have been over-provisioned. Restrict wp-admin access by IP allowlisting or an administrative HTTP authentication layer, and deploy WAF rules targeting SQL metacharacters in the plugin's request parameters, accepting that signature-based filtering is bypassable and may generate false positives on legitimate admin traffic. Where the WordPress database is shared with other applications - the condition that makes the S:C scope change meaningful - separate the WordPress schema onto its own database instance or restrict its database user to the wp_* tables. Because the injection is blind, monitor database query latency and enable database and web server logging to spot inference-based probing, and treat any confirmed compromise as a full credential-rotation event rather than a single-record leak.

Affected VersionsENISA

HashBar – WordPress Notification Bar n/a ≤2.0.3

Affected Packages

euvd hashbar_wordpress_notification_bar no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) in a WordPress plugin that builds database queries from user-supplied input without adequate parameterization or prepared statements. HashBar - WordPress Notification Bar is a notification/announcement bar plugin identified in the CPE data as cpe:2.3:a:devitems:hashbar_-_wordpress_notification_bar (all versions through 2.0.3). The injection is blind, meaning the application does not return query results or error output directly; the attacker instead observes boolean or timing differences in responses to reconstruct data. The CVSS 3.1 vector AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L describes network-reachable access with low attack complexity, a high-privilege prerequisite, no user interaction, a scope change (S:C) - which applies only where the affected SQL runs against a database shared with other applications or containing secrets beyond the WordPress install - high confidentiality impact, no integrity impact, and low availability impact. There is no EPSS score, no CISA KEV entry, and no referenced public exploit code for this CVE.

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Severity by source

Vendor (Patchstack) PRIMARY 7.6 HIGH
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
vuln.today AI 7.6 HIGH

Blind SQLi needs a high-privilege authenticated account (PR:H); network-reachable with low complexity; DB read gives C:H, S:C reflects the separate database engine, minor A:L, no integrity impact stated.

3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:L/SC:L/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
Low

DescriptionCVE.org

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in DevItems HashBar - WordPress Notification Bar allows Blind SQL Injection.

This issue affects HashBar - WordPress Notification Bar: from n/a through 2.0.3.

Executive ViewAI

Why It Matters

The DevItems HashBar WordPress Notification Bar plugin, in all versions through 2.0.3, exposes an authenticated high-privilege WordPress account to a blind SQL injection that can slowly infer database contents; no vendor-released patch identified at time of analysis. For the organization, the primary concern is not anonymous exploitation but data exposure if administrator-equivalent credentials are shared or compromised, especially where the WordPress database contains information belonging to other applications. No public exploit identified at time of analysis, so leadership should prioritize access controls, plugin removal, and database isolation while tracking the vendor for a fixed version after 2.0.3.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: deactivate or remove DevItems HashBar Notification Bar through version 2.0.3 until a fixed version is available; restrict plugin access to least-privilege, non-shared WordPress administrators and enforce MFA; rotate administrator credentials and review roles; deploy WAF SQL injection protections and log the affected parameter; isolate the WordPress database from other applications/schemas and monitor for blind SQL injection inference activity.

Threat Intelligence Overview

EPSS Score
0.4%
Top 68% exploitable
Prevalence
Low
niche WordPress notification-bar plugin, modest install base
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Medium
Technical Impact
Partial

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

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