Unrestricted Upload of File with Dangerous Type vulnerability in Optimal Access KBucket kbucket allows Upload a Web Shell to a Web Server.This issue affects KBucket: from n/a through <= 4.2.2.
Security readout for executives and security teams
Plain-English summary
CVE-2024-52369 is a critical arbitrary file upload flaw in the WordPress KBucket plugin. A low-privileged authenticated attacker may be able to upload a dangerous file, such as a web shell, leading to server compromise. The sources do not show CISA KEV listing or confirmed active exploitation.
Executive priority
Treat this as urgent for any WordPress environment using KBucket. The business risk is full site or server compromise, but urgency depends on confirmed plugin presence and whether exposed users can access vulnerable upload paths.
Technical view
The issue is CWE-434 in Optimal Access KBucket for WordPress, reported as affecting versions through 4.2.2. The CVSS 3.1 score is 9.9 with network access, low attack complexity, low privileges required, and high confidentiality, integrity, and availability impact. The source bundle does not identify a fixed version.
Likely exposure
Exposure is likely limited to WordPress sites running the KBucket plugin at versions through 4.2.2, especially where low-privileged users can reach affected upload functionality.
Exploitation context
The CVSS vector indicates exploitation is remote, low-complexity, requires low privileges, and needs no user interaction. The CVE description explicitly says web shell upload is possible. No provided source confirms active exploitation or KEV status.
Researcher notes
The source data has limited remediation detail and no confirmed exploit-in-the-wild evidence. Patchstack is the only vulnerability database reference in the bundle. Validate plugin versions carefully because the bundle title cites <=4.2.2 while the Patchstack URL text references 4.1.6.
Mitigation direction
Inventory WordPress sites for the KBucket plugin and installed version.
Disable or remove KBucket if running an affected version until vendor guidance is confirmed.
Check Patchstack and vendor guidance for any fixed version or official workaround.
Review webroot and upload directories for unexpected executable files.
Limit low-privileged account access to plugin upload functionality where possible.
Validation and detection
Confirm whether each WordPress site has KBucket installed and enabled.
Record the KBucket version and compare it with the affected range through 4.2.2.
Review server and WordPress logs for suspicious upload activity.
Inspect upload directories for newly created executable or script files.
Verify whether Patchstack or the vendor has published remediation guidance.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
1CVSS vectors
3Timeline events
1ADP providers
2Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-434 · source CWE mapping
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.