CVE-2026-17540Public exploitNetwork attack vector

Subscriber file read and deletion via command-source mismatch

Published Aug 10, 2026 · Updated Aug 10, 2026

Improper access control in Bit Apps Bit File Manager before 6.9.1 allows remote authenticated users to read or delete WordPress files. The AJAX connector registers elFinder permission bindings only when cmd appears in the POST body, but executes a cmd supplied in the query string. A Subscriber account and default, never-saved plugin settings suffice to disclose configuration secrets or crash the site by deleting required files; access is limited to the WordPress installation directory.

CVSS severity8.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Bit Apps Bit File Manager before 6.9.1 allows remote authenticated users to read or delete WordPress files. The AJAX connector registers elFinder permission bindings only when cmd appears in the POST body, but executes a cmd supplied in the query string. A Subscriber account and default, never-saved plugin settings suffice to disclose configuration secrets or crash the site by deleting required files; access is limited to the WordPress installation directory.

The record

CVE
CVE-2026-17540
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
Bit Apps
Product
Bit File Manager
Classifications
CWE-284, T1005, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Bit Apps · Bit File Managerversion=0 <6.9.1

Published CVSS scores

8.8CISACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1005Data from Local System
T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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