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Back to active CVEs
High · CVSS 7.1CVE-2026-66570

WordPress WordPress File Upload plugin <= 5.2.1 - Cross Site Scripting (XSS) vulnerabilityCVE-2026-66570

Answer in brief

CVE-2026-66570 records a High severity (CVSS 7.1) vulnerability in WordPress WordPress File Upload plugin <= 5.2.1 - Cross Site Scripting (XSS) vulnerability. The current sources do not mark it as known exploited. The current feed maps Nickboss/wp-file-upload (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 1, 2026Updated Nov 1, 2026Source checked Nov 1, 2026First seen by HOL Nov 1, 2026Material review Nov 1, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Nickboss/wp-file-upload (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Nickboss/wp-file-uploadgeneric>=0 <=5.2.1Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Nickboss/wp-file-upload.
  2. 2Review the reported fix. Source-reported solution: Update the WordPress WordPress File Upload plugin to the latest available version (at least 5.2.2).

Evidence timeline and material changes

  1. Published upstream

    Nov 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 1, 2026

Sources and claim methodology

  • Source referencepatchstack.com
Upstream source description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nickboss WordPress File Upload wp-file-upload allows Stored XSS.This issue affects WordPress File Upload: from n/a through 5.2.1.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Gitea stored XSS through legacy Actions artifact Content-EncodingAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Nov 1, 2026
References
1 linked source
Open source record