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Post SMTP EUVDEUVD-2026-68803

| CVE-2026-81278 MEDIUM
Missing Authorization (CWE-862)
2026-08-31 Patchstack GHSA-jq3g-93gg-57x6
5.4
CVSS 3.1 · Vendor: Patchstack
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Severity by source

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

Network-accessible endpoint exploitable by any authenticated low-privilege WordPress user; impact limited to settings modification and availability disruption with no confidentiality loss.

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

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

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

Lifecycle Timeline

3
Metadata Corrected
Aug 31, 2026 - 21:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Aug 31, 2026 - 21:31 vuln.today
CVE Published
Aug 31, 2026 - 20:40 cve.org
MEDIUM 5.4

DescriptionCVE.org

Missing Authorization vulnerability in WPExperts Post SMTP allows Exploiting Incorrectly Configured Access Control Security Levels.

This issue affects Post SMTP: from 4.0.0 through beta.1.

AnalysisAI

Missing Authorization in the WPExperts Post SMTP WordPress plugin (versions 4.0.0 through beta.1) permits low-privilege authenticated users to perform settings changes that should be restricted to administrators. The flaw, rooted in CWE-862, means certain plugin actions lack adequate capability checks before execution, allowing role-inappropriate operations against the plugin's SMTP configuration. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
technique details hidden
Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid WordPress account with at minimum subscriber-level privileges, consistent with PR:L in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 5.4 (Medium) rating reflects the PR:L requirement, which meaningfully limits exposure to authenticated users and rules out unauthenticated mass exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Administrators should update Post SMTP to a release beyond beta.1 as soon as a stable patched version is published in the WordPress plugin repository. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-68803 vulnerability details – vuln.today

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