EUVD-2026-76209
GHSA-8h23-4xqc-fcxw
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Contributor auth (PR:L) and admin viewing required (UI:R); scope change to admin browser (S:C) but availability impact on affected system is negligible.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Contributor Cross Site Scripting (XSS) in Simple Payment <= 2.5.4 versions.
AnalysisAI
Stored Cross-Site Scripting in the Simple Payment WordPress plugin (≤2.5.4) allows authenticated contributors to inject malicious scripts into content that executes in the browsers of higher-privileged users - including administrators - who view the affected content. The vulnerability stems from insufficient output encoding (CWE-79) and carries a scope-changed CVSS vector (S:C), indicating the injected payload escapes the contributor context to affect admin sessions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold a WordPress contributor-level account (authenticated, PR:L) on the target site - anonymous exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) accurately reflects the threat model: low-complexity, network-exploitable, but gated behind a contributor account and requiring an admin to view the injected content. … 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 | Upgrade the Simple Payment plugin to a version beyond 2.5.4 if a patched release has been published - check the WordPress Plugin Directory or the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/simple-payment/vulnerability/wordpress-simple-payment-plugin-2-5-4-cross-site-scripting-xss-vulnerability for the confirmed fix version, which was not specified in available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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