aBlocks: Unauthenticated reflected cross-site scripting

An attacker without an account can supply input that is reflected into browser output without sufficient neutralization. Script can execute under the site's origin when a victim interacts with the crafted request or response. The supplied vector requires victim interaction and reports limited confidentiality, integrity and availability impact. The export does not identify the endpoint, parameter, rendering function, output context or victim role. Affected versions: <= 2.16.0. No fixed release is confirmed. The checked official release remains 2.16.0; its stored-XSS changelog entries do not establish remediation for this reflected-XSS record.

CVE / CNA score 7.1 CVSS 3.1 · audit@patchstack.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: aBlocks
Plugin slug: ablocks
Affected: <= 2.16.0
Safe version: See mitigation notes
Published: Oct 08, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Oct 08, 2026 and is one of 6 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is confirmed. Disable the affected feature or deactivate the component until a confirmed fix is available. Application-level remediation: Validate accepted request input and escape each value for its final HTML, attribute, URL or script context before reflecting it into browser output. Do not treat fixes for a different stored-XSS path as confirmation for this issue.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kodezen LLC aBlocks ablocks allows Reflected XSS.This issue affects aBlocks: from n/a through 2.16.0.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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