WP-BusinessDirectory <= 4.0.2 - Unauthenticated Arbitrary File Write via uploadFile
CVSS score
5.3
EPSS probability
—
Risk score
0.5
Published
12 h ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
Impact on My Inventory
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources 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.
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 sources
WP-BusinessDirectory <= 4.0.2 sürümleri, kimlik doğrulaması gerektirmeyen bir dosya yükleme işlevi aracılığıyla rastgele dosya yazma izni verir (S0, S1).
Resmî kaynaklarda yama durumu doğrulanamadı; yama yok anlamına gelmez (S0).
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.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE: CWE-434
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.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Unknown | WP-BusinessDirectory | View |
RED HAT CSAF/VEX: Product Impact Check
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.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 5.3 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | CVE ADP |
| 5.3 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.
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:
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.
Attack Vector and Accessibility
Official Sources and Advisories
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Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-89271"