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InstaWP Connect CVE-2026-114743

| EUVDEUVD-2026-109350 LOW
Missing Authorization (CWE-862)
2026-10-25 WPScan GHSA-587v-fw9w-xc4m
3.1
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
    Obtain low-privileged account with sync access
  2. Exploit
    Submit settings-update request with valid nonce
  3. Execution
    Overwrite plugin settings including role-access control
  4. Impact
    Broaden own access to sync feature

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

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

Exploitation Conditions

Exploitation requires ALL of the following: InstaWP Connect earlier than 0.1.4.2; an administrator must have explicitly granted a low-privileged role access to the plugin's sync feature, which the description states is NOT enabled by default; and the attacker must already hold such an account and supply a valid nonce for the settings-update action, which performs no capability check. The limiting factors are therefore the non-default role grant and the need for an existing authenticated low-privileged account - in a default configuration no low-privileged user can reach the vulnerable action, which substantially narrows real-world exposure below what the network attack vector alone suggests.

Impact

This is a genuinely low-priority issue, and every available signal agrees. The CVSS 3.1 base score is 3.1 (Low) with vector AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N: network-reachable but requiring high attack complexity, a low-privileged authenticated account, and yielding only limited integrity impact (no confidentiality or availability loss). EPSS is 0.17% (6th percentile), indicating very low predicted exploitation likelihood. The vulnerability is NOT in CISA KEV, so there is no confirmed active exploitation. A public PoC reference exists (the WPScan advisory) but it is not verified as working exploit code, so POC availability must not be read as active exploitation. The vuln.today decision label is 'monitor', consistent with all other signals. The AC:H rating is explained by the description's precondition rather than by any disclosed memory-corruption or timing mechanism: exploitation depends on a non-default configuration in which an administrator has explicitly granted a low-privileged role access to the plugin's sync feature. No signals conflict here - low CVSS, low EPSS, no KEV, and an unverified PoC all point the same direction.

Exploit ScenarioDerived

On a site where an administrator has granted a low-privileged role access to InstaWP Connect's sync feature (not the default), a user holding that role submits the plugin's settings-update action with only a valid nonce and no capability check. Because the update includes the setting that controls which roles may access the sync feature, the attacker can rewrite plugin configuration and widen their own access. A public PoC reference exists via WPScan but is not verified as working exploit code.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 26, 2026

Settings overwrite in the InstaWP Connect WordPress plugin before 0.1.4.2 lets an authenticated low-privileged user who has been explicitly granted access to the plugin's sync feature change plugin settings, including the setting that controls which roles may use that feature. The settings-update action verifies a nonce but performs no capability check (CWE-862), so the attacker must already hold such an account and supply a valid nonce; the role grant is not enabled by default. This is a low-priority issue (CVSS 3.1, EPSS 0.17%, decision: monitor); a public PoC reference exists but is not verified as working exploit code, and there is no CISA KEV confirmation.

RemediationAI

Update InstaWP Connect to version 0.1.4.2 or later; the vendor patch is available, and the WPScan advisory is at https://wpscan.com/vulnerability/b94671c5-c5b5-418d-ac9c-af21c7cbc6a4/. Until the update is applied, do not grant low-privileged roles access to the plugin's sync feature; this removes that delegated functionality for those roles but keeps the vulnerable settings-update action out of reach for non-default delegated accounts. No other workaround is stated in the available sources.

Affected VersionsENISA

InstaWP Connect 0 <0.1.4.2

Affected Packages

euvd instawp_connect fix: 0.1.4.2

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

InstaWP Connect is a WordPress plugin whose sync feature can be delegated to selected roles by an administrator. The flaw is CWE-862 Missing Authorization: the plugin's settings-update action checks a nonce but does not perform a capability check, so a low-privileged account with sync access can modify settings, including the role-access setting for that feature. The assessed vector is CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N, reflecting limited integrity impact and high attack complexity; the sources state the required role grant is not enabled by default. Affected installations are those running a version before 0.1.4.2 where an administrator has explicitly granted a low-privileged role access to the sync feature and the attacker holds such an account with a valid nonce. The CPE cpe:2.3:a:unknown:instawp_connect:*:*:*:*:*:*:*:* identifies the plugin but does not resolve a vendor name.

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Severity by source

Vendor (WPScan) PRIMARY 3.1 LOW
AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
vuln.today AI 3.1 LOW

Requires an authenticated low-privileged account (PR:L) plus a non-default administrator-granted role, raising complexity (AC:H); impact is limited to settings integrity (I:L) with no C or A loss.

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

Primary rating from Vendor (WPScan).

CVSS VectorVendor: WPScan

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

Lifecycle Timeline

4
CVSS changed
Oct 26, 2026 - 11:22 NVD
3.1 (LOW)
Patch available
Oct 25, 2026 - 07:00 EUVD
CVE Published
Oct 25, 2026 - 06:00 cve.org
LOW 3.1
CVE Published
Oct 25, 2026 - 06:00 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

The InstaWP Connect WordPress plugin before 0.1.4.2 does not perform a capability check on its InstaWP Connect WordPress plugin before 0.1.4.2-settings update action, verifying only a nonce, allowing an authenticated user holding a low-privileged role that an administrator has granted access to the InstaWP Connect WordPress plugin before 0.1.4.2's sync feature to overwrite the InstaWP Connect WordPress plugin before 0.1.4.2's settings, including the setting controlling which roles may access that feature. The role grant is not enabled by default.

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
Medium
WordPress migration/connector plugin with a moderate active-install base
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 LOW
CISA KEV No
Public POC Yes
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
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· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +16
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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