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Teddy Bear Customize Addon EUVDEUVD-2026-75958

| CVE-2026-14559 CRITICAL
Improper Authentication (CWE-287)
2026-09-11 WPScan GHSA-4fpp-jjwf-mmjc
9.8
CVSS 3.1 · Vendor: WPScan
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Attack ChainAIDerived

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

  1. Access
    Enumerate a registered user's email
  2. Delivery
    Send login request with email only
  3. Exploit
    Plugin authenticates without password check
  4. Execution
    Obtain admin session cookie
  5. Impact
    Full site takeover via wp-admin

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

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

Exploitation Conditions

Exploitation requires only that the target WordPress site has the Teddy Bear Customize Addon plugin (version ≤1.0.5) installed and active, and that the attacker knows the email address of a registered user (administrator emails are frequently discoverable). No password, no authentication, and no user interaction are needed - the CVSS vector is AV:N/AC:L/PR:N/UI:N, so this is remote unauthenticated exploitation against any site running the vulnerable plugin. The only real limiting factor is deployment scope: the plugin is obscure, so exposure is confined to the specific sites that use it, and knowledge of a valid user email is the sole practical prerequisite.

Impact

All signals point to a genuine high priority rather than an inflated score. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H = 9.8) indicates remote, low-complexity, unauthenticated exploitation with no user interaction, which matches the description precisely - a rare case where the vector and the plain-language description agree fully. A public exploit exists per WPScan, meaning the barrier to abuse is essentially nil. The one tempering factor is prevalence: this is an obscure plugin with an 'unknown' CPE vendor, so exploitation is likely opportunistic against the specific sites that run it rather than internet-wide. EPSS is not provided in the input, and the CVE is not in CISA KEV, so there is no confirmation of active exploitation - treat it as high-likelihood-if-installed rather than confirmed in-the-wild.

Exploit ScenarioDerived

An attacker learns or guesses the email address of a site administrator (often exposed in author archives, post metadata, or WHOIS) and sends a crafted request to the plugin's login handler supplying only that email. The plugin issues an authenticated session for the administrator without any password check, giving the attacker full wp-admin control to install malicious plugins/themes and achieve site takeover or code execution. A public exploit for this flow is available via WPScan.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 11, 2026

Authentication bypass in the Teddy Bear Customize Addon WordPress plugin (through version 1.0.5) lets unauthenticated attackers log in as any registered user - including administrators - by supplying only that user's email address, because the login routine never verifies the account password. WPScan reports a publicly available exploit, and with CVSS 9.8 (AV:N/AC:L/PR:N/UI:N) this is a trivially weaponizable full account-takeover; no active-exploitation (KEV) listing exists at this time.

RemediationAI

No fixed version is identified in the available data, so at time of analysis treat this as no vendor-released patch confirmed - monitor the WordPress plugin repository and the WPScan advisory (https://wpscan.com/vulnerability/90cbbed5-9662-4405-88b8-bd55854dccdf/) for a release after 1.0.5 and upgrade immediately when one appears. Because the flaw is a complete authentication bypass with a public exploit, the safest interim control is to deactivate and remove the Teddy Bear Customize Addon plugin entirely; the trade-off is loss of whatever customization functionality it provides. If removal is not possible, restrict access to the plugin's login/authentication endpoint at the web-server or WAF layer (block the specific action/URL used by the vulnerable handler) and force a password reset plus review of administrator accounts for unauthorized logins, accepting that endpoint blocking may break legitimate plugin features.

Affected VersionsENISA

teddy-bear-customize-addon 0 ≤1.0.5

Affected Packages

euvd teddy_bear_customize_addon 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 affected component is a WordPress plugin (cpe:2.3:a:unknown:teddy-bear-customize-addon) that extends product/store customization, and the flaw sits in its custom authentication handler. The root cause is CWE-287 (Improper Authentication): the plugin implements a login path that identifies a user by email and establishes an authenticated session/cookie without ever validating the supplied credential against the stored password hash. In effect the password check is absent, so possession of a known or guessable email address is sufficient to be authenticated as that WordPress user, inheriting whatever role and capabilities the account holds.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (WPScan) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Remote unauthenticated login as any user with no interaction (AV:N/AC:L/PR:N/UI:N); admin takeover yields full confidentiality, integrity, and availability impact.

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

Primary rating from Vendor (WPScan).

CVSS VectorVendor: WPScan

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

Lifecycle Timeline

3
CVSS changed
Sep 11, 2026 - 11:22 NVD
9.8 (CRITICAL)
CVE Published
Sep 11, 2026 - 06:00 cve.org
CRITICAL 9.8
CVE Published
Sep 11, 2026 - 06:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

The teddy-bear-customize-addon WordPress plugin through 1.0.5 does not verify a user's password before authenticating them, allowing unauthenticated attackers to log in as any registered user, including administrators, by supplying only that user's email address.

Technical POC Analysis

The flaw is CWE-287: Improper Authentication.

Full technical POC analysis - root cause, step-by-step exploitation and patch breakdown - is part of the Pro and Business plans.

Executive ViewAI

Why It Matters

The Teddy Bear Customize Addon plugin for WordPress (versions 1.0.5 and earlier) contains a critical authentication bypass flaw allowing unauthenticated attackers to log in as any registered user-including site administrators-by supplying only an email address, with no password verification required. This vulnerability directly enables complete administrative takeover of affected WordPress sites, creating immediate risk of site defacement, malware injection, data theft, and operational disruption. Organizations running this plugin face trivial exploitation with no vendor patch available.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Immediately uninstall the plugin; (2) restrict WordPress admin dashboard access by IP address via WAF rules or web server configuration; (3) implement real-time authentication logging with alerts for unusual login patterns; (4) conduct forensic audit of site integrity, database activity, and user modification history to detect post-compromise adversary actions.

Threat Intelligence Overview

EPSS Score
0.1%
Top 97% exploitable
Prevalence
Rare
obscure WordPress plugin, unknown vendor, tiny install footprint
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium

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 CRITICAL
CISA KEV No
Public POC Yes
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
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
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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