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WP Rentals EUVDEUVD-2026-94260

| CVE-2026-27434 MEDIUM
Missing Authorization (CWE-862)
2026-10-07 Patchstack GHSA-jxc3-4pxh-5qjw
5.3
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
    Identify site running WP Rentals ≤3.14.2
  2. Exploit
    Send unauthenticated request to unprotected action
  3. Impact
    Perform unauthorized state change (integrity impact)

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 only that a target site runs the WP Rentals (wprentals) theme at version 3.14.2 or earlier; the CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no authentication, no special configuration, and no user interaction are needed, so default installations are affected. The limiting factor is the narrow impact: only a Low integrity effect (C:N/A:N), meaning an attacker can perform an unauthorized state-changing action but cannot read sensitive data or disrupt availability through this flaw alone. The specific feature/endpoint lacking the authorization check is not named in the available description, so defenders cannot scope the exact affected function without the vendor advisory.

Impact

This is a genuine but moderate-priority issue, not a top-tier emergency. The CVSS 3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N) reflects a network-reachable, low-complexity, unauthenticated flaw, but the impact is deliberately narrow: only a Low integrity impact (I:L) with no confidentiality (C:N) or availability (A:N) effect. CWE-862 (Missing Authorization) combined with the 'Broken Access Control' / 'Authentication Bypass' framing indicates an attacker can invoke an action or modify state they should not be authorized for, rather than read sensitive data or take over the site. No EPSS score, no CISA KEV listing, and no public POC are present in the provided data, so there is no evidence of active or widespread exploitation - the signals are internally consistent (modest score, no exploitation intelligence) and do not conflict. The main driver of real-world risk is the PR:N/AC:L combination (easy to script once a payload is known), tempered by the low impact ceiling. Priority should be patch-on-normal-cycle unless the affected theme is internet-facing on a high-value rental site.

Exploit ScenarioDerived

An unauthenticated remote attacker sends a crafted HTTP request to a WP Rentals endpoint that fails to verify the caller's authorization, invoking a privileged action or altering data the attacker should not be able to change. Because no authentication or user interaction is required (PR:N/UI:N) and complexity is low, the request can be issued directly against any reachable site running WP Rentals ≤ 3.14.2. No public exploit code was identified at the time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 07, 2026

WP Rentals theme through 3.14.2 contains a missing authorization flaw (CWE-862) that lets unauthenticated remote attackers trigger unauthorized state-changing actions through incorrectly configured access controls. The CVSS:3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N indicates no authentication, no user interaction, and only low integrity impact, with no confidentiality or availability impact, making this a moderate-priority issue rather than a top-tier emergency. No public exploit identified at time of analysis, and default installations running affected versions are exposed.

RemediationAI

No vendor-released patch version is identified in the provided data; administrators should monitor the Patchstack advisory and the theme vendor for an update and apply it as soon as a fixed version is available. Until then, if WP Rentals is not essential, disable or remove the theme to eliminate exposure; if it must remain, restrict unauthenticated state-changing requests to theme-specific AJAX/REST endpoints using WAF or reverse-proxy rules, disable unused theme actions where possible, and monitor logs for unauthorized content or configuration changes. These compensating controls have trade-offs: broad endpoint blocking may break legitimate public-facing listing/booking forms, and reverse-proxy authentication can prevent anonymous users from using intended theme functionality, so rules should be scoped as tightly as the unknown vulnerable endpoint allows.

Affected VersionsENISA

WP Rentals 0 ≤3.14.2

Affected Packages

euvd wp_rentals 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 technology is the WP Rentals (wprentals) WordPress theme from sc Internet Vivoo. CWE-862 (Missing Authorization) means a function or action that should enforce WordPress capability or permission checks does not do so, allowing an unauthenticated request to perform a state change. The CPE cpe:2.3:a:sc_internet_vivoo:wp_rentals:*:*:*:*:*:*:*:* identifies the product family, and the description states versions through 3.14.2 are affected. The CVSS vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N confirms network exploitability, low complexity, no privileges, no user interaction, and a narrow low-integrity impact; the specific vulnerable endpoint or feature is not named in the available Patchstack advisory, so defenders cannot scope the exact function without further vendor detail. Patchstack is the reporting source.

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Severity by source

Vendor (Patchstack) PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
vuln.today AI 5.3 MEDIUM

Missing authorization on a network endpoint is unauthenticated and low-complexity (AV:N/AC:L/PR:N), yielding only limited unauthorized state change (I:L) with no confidentiality or availability impact.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

DescriptionCVE.org

Missing Authorization vulnerability in sc Internet Vivoo WP Rentals wprentals allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP Rentals: from n/a through 3.14.2.

Threat Intelligence Overview

EPSS Score
0.3%
Top 80% exploitable
Prevalence
Low
niche commercial WordPress rental-booking theme, industry-specific audience
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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +26
PoC: 0
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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