CVE-2026-27084
📛 CVE Title
WordPress Buisson theme <= 1.1.11 - PHP Object Injection vulnerability
Description
Deserialization of Untrusted Data vulnerability in ThemeREX Buisson buisson allows Object Injection.This issue affects Buisson: from n/a through <= 1.1.11.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Patchstack
- CVSS severity
- CRITICAL
- CVSS score
- 9.8 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Effective score
- 9.8 / 10 CRITICAL source: CNA overview
- CWE(s)
-
CWE-502 - Reserved
- 2026-02-17
- Published
- 2026-03-25 17:14 UTC
- Last updated
- 2026-04-28 18:15 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/27xxx/CVE-2026-27084.json
- Linked Threat
- CVE-2026-27084 — Buisson <= 1.1.11 - Unauthenticated PHP Object Injection
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-03-25 17:16:56 UTC
- NVD last modified
- 2026-04-24 16:35:20 UTC
- NVD CVSS v3.1
- 9.8 / 10 CRITICAL source: audit@patchstack.com
- NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 3.9 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0002 (probability of exploitation in next 30 days)
- EPSS percentile
- 6.05% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25
NVD / KEV / EPSS data refreshed 2026-05-25 18:00 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-15796 - Assigner
- Patchstack
- Published
- Mar 25, 2026, 4:14:55 PM
- Updated
- Apr 28, 2026, 4:15:01 PM
- EUVD base score (CVSS 3.1)
-
9.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EUVD-reported EPSS
- 0.0200
- Vendors
- themerex
- Products
-
Buisson (0 ≤1.1.11)Buisson (n/a ≤≤ 1.1.11)
- Aliases
-
GHSA-qq9h-65hg-3824
ENISA description: Deserialization of Untrusted Data vulnerability in ThemeREX Buisson buisson allows Object Injection.This issue affects Buisson: from n/a through <= 1.1.11.
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| ThemeREX | Buisson |
0 (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
MITRE references (1) cveawg.mitre.org
Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
NVD-tagged references (1)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
Indicators (2)
IOCs linked to the auto-promoted Threat row.
| Type | Value | VirusTotal | Attached |
|---|---|---|---|
| domain |
injection.this
|
no local data | 2026-05-18 21:18 UTC |
| cve |
CVE-2026-27084
|
no local data | 2026-06-06 12:36 UTC |
Remediations (15)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
Wordfence remediation: Buisson - Gardening WordPress ThemeWordfence
No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
2026-06-06 12:36 UTC -
web:cybersecuritynews.com
Fortinet released security advisories on May 12, 2026 , addressing five vulnerabilities spanning its wireless access point controllers, network operating system, and enterprise management platforms, including a critical unauthenticated authorization bypass in FortiSandbox. Critical Flaw in FortiSandbox The most severe vulnerability disclosed is CVE - 2026 -26083 (FG-IR-26-136), a missing ...
2026-05-22 16:16 UTC -
web:blog.qualys.com
With Qualys Policy Audit's out-of-the-box mitigation or Compensatory Controls, which reduce the risk of a vulnerability being exploited because the remediation ( fix / patch ) cannot be done immediately, these security controls are not recommended by any industry standards, such as CIS and DISA-STIG.
2026-05-22 16:16 UTC -
web:support.servicenow.com
Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...
2026-05-22 16:16 UTC -
web:www.computerworld.com
Each month, the team at Readiness analyzes the latest Patch Tuesday updates from Microsoft and provides detailed, actionable testing guidance. The company's Patch Tuesday release for February ...
2026-05-22 16:16 UTC -
web:securityaffairs.com
Fortinet patched critical flaws in FortiSandbox and FortiAuthenticator that could let attackers remotely execute code on unpatched systems.
2026-05-22 02:46 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-22 02:46 UTC -
web:www.bleepingcomputer.com
Fortinet has released security patches for two critical vulnerabilities in FortiSandbox and FortiAuthenticator that could enable attackers to run commands or arbitrary code.
2026-05-22 02:46 UTC -
web:cybersecuritynews.com
Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.
2026-05-22 02:46 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-22 02:46 UTC -
web:www.pcworld.com
This month's Patch Tuesday includes an actively exploited Office zero-day vulnerability and several critical RCE bugs in Windows and Remote Desktop.
2026-05-22 02:46 UTC -
web:www.techrepublic.com
Microsoft's March Patch Tuesday fixes 78 vulnerabilities, including Office preview pane flaws, an Excel Copilot data leak risk, and an AI-discovered 9.8 severity bug.
2026-05-22 02:46 UTC -
web:www.windowslatest.com
Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.
2026-05-22 02:46 UTC -
web:krebsonsecurity.com
Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.
2026-05-22 02:46 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-22 02:46 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-27084.json.
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