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Scripts n Styles CVE-2026-62042

| EUVDEUVD-2026-95727 MEDIUM
Missing Authorization (CWE-862)
2026-10-09 Patchstack GHSA-295r-46vr-jrv3
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 WordPress site running Scripts n Styles ≤3.5.8
  2. Exploit
    Send crafted request to unprotected plugin endpoint
  3. Execution
    Bypass missing authorization check
  4. Impact
    Access restricted function or data

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

Exploitable only against WordPress sites with the unFocus Projects Scripts n Styles plugin installed and active at version 3.5.8 or earlier. The CVSS vector (AV:N/AC:L/PR:N/UI:N) indicates no authentication, no user interaction, and no special configuration are required to reach the vulnerable code path, so default installations of the affected plugin are exposed. The primary limiting factors are therefore the plugin's presence and version rather than any runtime prerequisite; impact is further bounded to low confidentiality exposure (C:L, with no integrity or availability impact), meaning a successful request discloses or reaches restricted functionality but does not grant data modification or site takeover. Exact affected sub-functionality is not detailed in the available advisory data.

Impact

The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, base 5.3 Medium) indicates a network-reachable, low-complexity, unauthenticated flaw with only low confidentiality impact and no integrity or availability impact - consistent with a CWE-862 Missing Authorization issue that exposes limited data or functionality rather than enabling full compromise. No EPSS score was supplied, and the vulnerability is NOT listed in CISA KEV, so there is no public evidence of active exploitation. No proof-of-concept is referenced in the single Patchstack advisory provided. The one Tag labeled 'Authentication Bypass' overstates the vector slightly: the CWE (862 Missing Authorization) and the C:L/I:N/A:N impact point to a broken access-control / authorization gap affecting a specific function, not a full authentication bypass yielding privileged access. On balance this is a real-but-modest-priority issue: genuinely remote and unauthenticated, but low technical impact and hosted in a niche plugin, so it is more of a routine patch item than an emergency. Missing data to note explicitly: EPSS probability is absent, POC status is unknown, and exact affected-version boundaries rely solely on the vendor advisory and NVD CPE (through 3.5.8).

Exploit ScenarioDerived

A remote, unauthenticated attacker sends a crafted HTTP request directly to a Scripts n Styles plugin endpoint whose authorization check is missing or misconfigured, invoking functionality or reading data that should require higher privileges. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N, no credentials, user interaction, or special timing is needed, though impact is limited to low confidentiality exposure. No public proof-of-concept exploit is referenced in the available data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 09, 2026

Missing authorization checks in the WordPress plugin Scripts n Styles (unFocus Projects) through version 3.5.8 let unauthenticated, remote attackers reach functionality or data that should be restricted to privileged users. Because the CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N (base 5.3), no credentials, no user interaction and no non-default configuration are required - any site with the plugin installed and active at or below 3.5.8 is exposed, with impact bounded to low confidentiality loss and no integrity or availability effect. There is no evidence of active exploitation (not in CISA KEV) and no public exploit code identified at time of analysis, and no EPSS score was supplied; risk is therefore driven primarily by the plugin's presence and version rather than confirmed threat activity. The advisory, reported by Patchstack, does not disclose the specific vulnerable sub-functionality.

RemediationAI

Patch status is not confirmed from the available data: the only reference supplied is the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/scripts-n-styles/vulnerability/wordpress-scripts-n-styles-plugin-3-5-8-broken-access-control-vulnerability), which does not specify a fixed version, so the first action is to consult that advisory and the plugin's vendor page for a release above 3.5.8 and upgrade as soon as one is published - do not assume a fixed build exists until the vendor confirms it. If no fixed version is available, the most effective compensating control is to deactivate and remove the Scripts n Styles plugin on any site where its script/style-injection features are not actively required; the trade-off is loss of that functionality for the affected site until a patched release is installed. Where the plugin must remain enabled, restrict exposure at the perimeter: block or rate-limit unauthenticated requests to the plugin's endpoints (its wp-admin/admin-ajax.php actions, admin-post handlers and any REST routes under the plugin namespace) using a WAF or reverse-proxy rule, and, if the site's workflow allows it, restrict wp-admin and admin-ajax.php access by IP allowlist - the trade-off is that legitimate front-end or editor workflows that depend on those endpoints may break and must be tested. Additional hardening that reduces blast radius without fixing the flaw includes enforcing least privilege for WordPress roles, disabling user registration and unused accounts, and monitoring web-server and application logs for anomalous unauthenticated requests to plugin paths; these measures inspect and constrain traffic rather than close the missing authorization check itself, so they should be treated as temporary until a vendor patch is applied. Given the low confidentiality-only impact, prioritize remediation based on whether the plugin is installed and active rather than on confirmed exploitation, since no public exploit code or CISA KEV entry has been identified at time of analysis.

Affected VersionsENISA

Scripts n Styles 0 ≤3.5.8

Affected Packages

euvd scripts_n_styles 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 root cause class is CWE-862 (Missing Authorization), which in the WordPress plugin ecosystem typically manifests as an AJAX handler, REST route, or admin-post action that executes sensitive logic without a capability check such as current_user_can() or a nonce/authorization guard. WordPress core provides the authorization primitives, but plugins are responsible for enforcing them on their own entry points, so a missing check exposes those endpoints to any network client. The affected component is the Scripts n Styles plugin by unFocus Projects, matched by CPE cpe:2.3:a:unfocus_projects:scripts_n_styles:*:*:*:*:*:*:*:* (all versions up to and including 3.5.8), which is a WordPress site-management plugin handling custom script and style injection - functionality that in a correctly configured deployment belongs under administrator-level control. The CVSS vector's C:L with I:N/A:N indicates the exposed path reads or discloses restricted information or reaches a restricted code path without permitting modification, deletion, or denial of service, which is consistent with an unauthenticated information-exposure class rather than full site takeover. The Patchstack advisory does not enumerate the exact affected sub-functionality or parameter, so defenders should treat any unauthenticated endpoint added by the plugin as potentially in scope.

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Severity by source

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

Missing authorization is reachable over the network with no credentials or interaction (AV:N/AC:L/PR:N/UI:N); CWE-862 with limited data exposure supports C:L and I:N/A:N.

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

DescriptionCVE.org

Missing Authorization vulnerability in unFocus Projects Scripts n Styles scripts-n-styles allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Scripts n Styles: from n/a through 3.5.8.

Threat Intelligence Overview

EPSS Score
0.2%
Top 92% exploitable
Prevalence
Low
niche WordPress plugin, limited install base
Data Quality
4 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 0.2%
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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