EUVD-2026-65163
GHSA-cvm2-5mpr-98pp
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
XSS does not cause availability disruption, so A:N overrides the NVD-supplied A:L; remaining metrics align with unauthenticated network XSS with scope change.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in Boost <= 2.0.4 versions.
AnalysisAI
Unauthenticated cross-site scripting in the Boost WordPress plugin (versions ≤ 2.0.4) allows a remote, unauthenticated attacker to inject arbitrary JavaScript that executes in the browser context of any user who visits or interacts with the affected page, confirmed by PR:N in the CVSS vector. The scope change metric (S:C) reflects that impact crosses from the plugin/server boundary into the victim's browser session, enabling session hijacking, credential theft, or unauthorized administrative actions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required to inject the payload - the CVSS PR:N metric confirms unauthenticated attackers can plant the malicious script. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.1 score reflects a meaningful but bounded risk: AV:N and PR:N confirm the payload can be injected without authentication from the network, which is a significant exposure for any public-facing WordPress site, and even a mid-sized municipal IT team running multiple WordPress deployments should treat this as a priority patch rather than a deferred item. … 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 | The primary remediation is to update the Boost plugin to a version beyond 2.0.4; the exact patched release version is not specified in the available intelligence and must be confirmed via the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/boost/vulnerability/wordpress-boost-plugin-2-0-4-cross-site-scripting-xss-vulnerability or the official WordPress plugin repository. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of WordPress installations using the Boost plugin and document all affected versions. …
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External POC / Exploit Code
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