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Builderius EUVDEUVD-2026-96427

| CVE-2026-27350 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-10-10 Patchstack GHSA-mvw2-jq9p-j2h2
7.2
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 WordPress site running Builderius 1.4
  2. Delivery
    Send crafted request with attacker URL
  3. Exploit
    Plugin performs server-side fetch (SSRF)
  4. Execution
    Reach internal/metadata endpoints
  5. Impact
    Exfiltrate limited internal data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

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

Exploitation Conditions

The CVE description provides no specific feature, protocol, or configuration prerequisite - it states only that Builderius is vulnerable to SSRF across versions 1.4 through 1.4-beta. Per the supplied CVSS vector (PR:N/UI:N/AC:L), no authentication or user interaction is claimed and complexity is low, implying exploitation against a site simply running the affected plugin version; however, the exact vulnerable endpoint/parameter is not disclosed in the provided data and should be confirmed via the Patchstack advisory. Limiting factors: the attack targets only installations of this specific niche plugin at the affected versions, impact is scope-changed but low-confidentiality/low-integrity (not full compromise), and the unauthenticated claim (PR:N) is unverified - many comparable WordPress plugin SSRFs in practice require authenticated access, which would narrow the realistic attacker set.

Impact

The input CVSS v3.1 vector (AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N, base 7.2 HIGH) describes a network-reachable, unauthenticated, low-complexity SSRF with a scope change and limited confidentiality/integrity impact - consistent with CWE-918. However, several high-value signals are MISSING: no EPSS probability, no CISA KEV entry, and no public proof-of-concept are present in the provided data, so exploitation likelihood cannot be quantified. There is no SSVC decision data supplied. The single source is a Patchstack advisory, which is a reputable WordPress-vulnerability feed but is the only corroborating reference. One point of tension to verify: Patchstack-class WordPress plugin SSRFs frequently require at least authenticated (contributor/author) access in practice, yet the supplied vector asserts PR:N (unauthenticated) - this should be confirmed against the Patchstack advisory detail, as it materially changes risk. Net assessment: a genuinely meaningful server-side flaw worth patching, but in the absence of EPSS/KEV/POC it reads as a moderate, not emergency, priority - elevated mainly by the unauthenticated-network claim rather than by any evidence of real-world exploitation.

Exploit ScenarioDerived

A remote attacker sends a crafted request to a vulnerable Builderius endpoint on a WordPress site, supplying an attacker-controlled URL that the plugin fetches server-side. This lets the attacker coerce the server into contacting internal services or cloud metadata endpoints, with limited data returned to the attacker. No public exploit code has been identified at time of analysis.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 10, 2026

Server-side request forgery in the Builderius WordPress plugin (versions 1.4 through 1.4-beta) lets an attacker drive the affected site to make arbitrary outbound HTTP requests, potentially reaching internal services, localhost, and cloud instance metadata endpoints. Our independent assessment scores this as network-reachable, low-complexity, and requiring low-privileged authenticated access (PR:L, base 7.2 HIGH), while the vendor-supplied vector claims unauthenticated access (PR:N) that remains unverified; comparable WordPress plugin SSRFs in practice often require a logged-in user. Impact is limited to low confidentiality and integrity with a scope change, and no public exploit code or confirmed active exploitation was identified at time of analysis.

RemediationAI

No vendor-released patch version is identified in the available data, so operators should monitor the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/builderius/vulnerability/wordpress-builderius-plugin-1-4-beta-server-side-request-forgery-ssrf-vulnerability?_s_id=cve for a fixed release and update Builderius as soon as one is published. Until a patch is available, remove or deactivate the Builderius plugin if it is not required; this is the strongest mitigation but sacrifices its page-building functionality. If the plugin must remain active, apply egress filtering on the WordPress host or its network segment to deny outbound connections to RFC1918 ranges, loopback (127.0.0.0/8), link-local (169.254.0.0/16 including 169.254.169.254), and other internal services, allowing only required external destinations; this can break legitimate plugin fetches of remote assets. Because our assessed vector is PR:L, restrict WordPress accounts to the minimum necessary roles and audit low-privileged users, which narrows the realistic attacker set even if the PR:N claim proves accurate. A WAF rule that inspects parameters for internal hostnames, IP literals, and URL-redirection patterns adds defense in depth but is bypassable and should not be the sole control.

Affected VersionsENISA

Builderius 1.4 ≤1.4-beta

Affected Packages

euvd builderius 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

CWE-918 (Server-Side Request Forgery) in a WordPress plugin: the Builderius visual builder fails to validate or restrict a user-controllable URL before the server fetches it. The CPE cpe:2.3:a:builderius.io:builderius:*:*:*:*:*:*:*:* confirms the affected component is the Builderius plugin published by builderius.io, with a wildcard version entry that is imprecise; the advisory scope is 1.4 through 1.4-beta. Because the request originates from the web server, it can bypass perimeter controls and reach services bound to 127.0.0.1, RFC1918 addresses, or the 169.254.169.254 cloud metadata endpoint. The scope-changed (S:C) metric reflects that the vulnerable plugin can affect resources beyond its own security authority, while C:L/I:L indicates the primary payoff is information disclosure or limited state change rather than full compromise. The specific vulnerable endpoint and parameter are not disclosed in the available data and should be confirmed through the Patchstack advisory.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Patchstack) PRIMARY 7.2 HIGH
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
vuln.today AI 6.4 MEDIUM

Network-reachable low-complexity SSRF with scope change and limited C/I impact; PR:L chosen because WordPress plugin SSRFs of this class typically require at least low-privilege authentication, and the description discloses no condition supporting PR:N.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/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
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionCVE.org

Server-Side Request Forgery (SSRF) vulnerability in Builderius.io Builderius allows Server Side Request Forgery.

This issue affects Builderius: from 1.4 through 1.4-beta.

Executive ViewAI

Why It Matters

Builderius WordPress plugin versions 1.4 through 1.4-beta contain a high-severity server-side request forgery vulnerability that could let an attacker use an affected site to reach internal services or cloud metadata endpoints. No vendor patch is currently available and no public exploit or active exploitation has been identified, but the exposure is relevant to any organization running this plugin on internet-facing or cloud-hosted WordPress sites. Leadership should prioritize inventory and mitigation because successful exploitation could expose internal network resources or cloud credentials, even though the assessed impact is limited to low confidentiality and integrity with scope change.

Business Impact: Medium
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations include deactivating or removing the Builderius plugin where possible, restricting outbound HTTP from WordPress hosts to approved destinations, blocking access to localhost, RFC1918 private ranges, and 169.254.169.254 metadata endpoint, enforcing least privilege for plugin users, applying WAF/virtual patching for SSRF, and monitoring for anomalous outbound requests.

Threat Intelligence Overview

EPSS Score
0.2%
Top 95% exploitable
Prevalence
Low
niche WordPress page-builder plugin, limited install base
Data Quality
7 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 0.2%
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

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

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