What is the CVSS score of EUVD-2026-40106?

EUVD-2026-40106 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.2%.

Ads by WPQuads EUVD-2026-40106

| CVE-2026-57335 MEDIUM

Missing Authorization (CWE-862)

2026-06-29 Patchstack

GHSA-g5p9-fm5v-5qqf

Authentication Bypass Ads By Wpquads

6.5

CVSS 3.1 · Vendor: Patchstack

Severity by source

Vendor (Patchstack) PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

vuln.today AI

6.5 MEDIUM

Network-accessible WordPress endpoint, low complexity, subscriber auth required (PR:L), integrity-only impact aligning with ad config manipulation.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Jun 29, 2026 - 15:22 vuln.today

DescriptionCVE.org

Subscriber Broken Access Control in Ads by WPQuads <= 3.0.3 versions.

AnalysisAI

Broken access control in the Ads by WPQuads WordPress plugin (versions <= 3.0.3) allows authenticated subscribers to perform privileged administrative actions they are explicitly unauthorized to execute. The flaw, classified under CWE-862 (Missing Authorization), results in high integrity impact with no confidentiality or availability effect, per the CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N vector. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Delivery

Authenticate to WordPress site

Exploit

Identify unprotected plugin endpoint

Execution

Send crafted privileged request as subscriber

Persist

Bypass missing capability check

Impact

Modify or inject ad configuration

Access

Delivery

Authenticate to WordPress site

Exploit

Identify unprotected plugin endpoint

Execution

Send crafted privileged request as subscriber

Persist

Bypass missing capability check

Impact

Modify or inject ad configuration

Vulnerability AssessmentAI

Exploitation	Exploitation requires a valid WordPress subscriber-level (or higher) authenticated session on the target site. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The CVSS score of 6.5 (Medium) is substantiated by the vector: network-reachable (AV:N), low complexity (AC:L), low-privilege prerequisite (PR:L), no user interaction (UI:N), and high integrity impact (I:H). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker registers a free subscriber account on a WordPress site running Ads by WPQuads <= 3.0.3 - a common configuration on blogs and news sites with open registration. Using their valid session cookie, they send a crafted HTTP request (e.g., an admin-ajax.php POST or REST API call) targeting an inadequately protected endpoint in the plugin. …
Remediation	Update the Ads by WPQuads plugin to a version released after 3.0.3 - consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/quick-adsense-reloaded/vulnerability/wordpress-ads-by-wpquads-plugin-3-0-3-broken-access-control-vulnerability and the WordPress plugin repository for the patched release. … Detailed patch versions, workarounds, and compensating controls in full report.