CVE-2025-26977Network attack vector

Author-level unauthorized action via unvalidated object key

Published Feb 25, 2025 · Updated Apr 28, 2026

Authorization bypass in Ninja Team FileBird 6.4.2.1 and earlier allows remote authenticated users with Author access to perform an unauthorized action. The plugin accepts a user-controlled object key without validating whether the referenced object is authorized for the requesting account. Author-level access is required; public sources do not identify the affected endpoint or specify the unauthorized action.

CVSS severity3.8
Low
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Ninja Team FileBird 6.4.2.1 and earlier allows remote authenticated users with Author access to perform an unauthorized action. The plugin accepts a user-controlled object key without validating whether the referenced object is authorized for the requesting account. Author-level access is required; public sources do not identify the affected endpoint or specify the unauthorized action.

The record

CVE
CVE-2025-26977
Published
Feb 25, 2025
Updated
Apr 28, 2026
Vendor
Ninja Team
Product
FileBird
Classifications
CWE-639, CAPEC-180, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=6.4.2.1 changes=[{"at":"6.4.6","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Ninja Team · FileBirdversion=0 <=6.4.2.1 changes=[{"at":"6.4.6","status":"unaffected"}]

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.8PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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