EUVD-2026-39781
GHSA-c879-9r2p-425r
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Network-reachable with no credentials or complexity; scope unchanged and impact limited to integrity only, consistent with unauthorized action execution without data leakage.
Primary rating from Vendor (patchstack).
CVSS VectorVendor: patchstack
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
1DescriptionCVE.org
Unauthenticated Broken Access Control in SiteGround Email Marketing <= 1.7.5 versions.
AnalysisAI
Broken access control in the SiteGround Email Marketing WordPress plugin (versions 1.7.5 and earlier) permits unauthenticated remote attackers to perform privileged actions due to missing authorization checks (CWE-862). The CVSS vector confirms network-accessible, low-complexity, zero-privilege exploitation with an integrity-only impact, meaning attackers can manipulate plugin-managed data or functionality without logging in. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - the CVSS vector PR:N confirms unauthenticated exploitation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD-assigned CVSS 3.1 score of 5.3 (Medium) reflects a constrained impact profile: integrity-only (I:L), no confidentiality or availability degradation, and unchanged scope. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker enumerates a target WordPress site, detects the SiteGround Email Marketing plugin version via response headers, readme.txt, or plugin directory enumeration, then sends a crafted HTTP request directly to the exposed plugin endpoint to invoke a privileged operation - such as modifying email subscription settings or injecting data - without any valid session or nonce. No exploit code has been publicly identified, but the low attack complexity and zero-privilege requirement make this straightforward to exploit manually once the vulnerable endpoint is identified. |
| Remediation | Administrators should update the SiteGround Email Marketing plugin to a version beyond 1.7.5 immediately upon availability. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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