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CVE-2026-89271

WP-BusinessDirectory <= 4.0.2 - Unauthenticated Arbitrary File Write via uploadFile

CVSS score

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EPSS probability

—

Risk score

—

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

WP-BusinessDirectory <= 4.0.2 – Unauthenticated Arbitrary File Write Vulnerability

Sources read

2

Source agreement

Tam uyum

Evidence confidence

%63

Short explanation

Versions of the WP-BusinessDirectory plugin up to 4.0.2 do not validate file type or destination in the uploadFile handler, allowing unauthenticated attackers to write files with arbitrary content to arbitrary locations. Default server configurations prevent code execution, but the written files can be leveraged later.

Why does it matter?

Placing arbitrary files on the server can serve as a foothold for later exploitation chains, increasing the risk of system compromise.

What should be done?

  • Apply vendor update when released
  • Enforce strict file type and destination validation in the upload handler
  • Store uploaded files outside the web root
  • Restrict allowed file extensions
  • Implement monitoring and integrity checks for uploaded files
Chain of evidence and sources2 verified claims

WP-BusinessDirectory <= 4.0.2 sürümleri, kimlik doğrulaması gerektirmeyen bir dosya yükleme işlevi aracılığıyla rastgele dosya yazma izni verir (S0, S1).

S0 · daybreach-canonicalS1 · cvelist

Resmî kaynaklarda yama durumu doğrulanamadı; yama yok anlamına gelmez (S0).

S0 · daybreach-canonical
Show the technical text from the sources

The WP-BusinessDirectory WordPress plugin through 4.0.2 does not restrict the type or destination of files saved by an unauthenticated upload handler, allowing unauthenticated attackers to write files with arbitrary content to arbitrary locations, though not to execute code on a default server configuration.

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-89271 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1UnknownWP-BusinessDirectory View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-89271 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CWE-20: Improper Input Validation

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-89271 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Official Sources and Advisories

https://wpscan.com/vulnerability/78b3ade9-1614-4040-87be-c43dbc50b79e/vendor-advisory

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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