CVE-2021-47979Public exploitNetwork attack vector

Authenticated file deletion via AJAX path traversal

Published May 16, 2026 · Updated May 16, 2026

Path traversal in miniOrange Backup and Restore 1.0.3 allows remote authenticated users to delete arbitrary WordPress installation files. The AJAX backup handler combines untrusted file_name and folder_name values into the deletion path without restricting the result to a backup directory. The published request uses a valid WordPress session and action nonce; deleting configuration or application files can disable the site.

CVSS severity8.7
High
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

Path traversal in miniOrange Backup and Restore 1.0.3 allows remote authenticated users to delete arbitrary WordPress installation files. The AJAX backup handler combines untrusted file_name and folder_name values into the deletion path without restricting the result to a backup directory. The published request uses a valid WordPress session and action nonce; deleting configuration or application files can disable the site.

The record

CVE
CVE-2021-47979
Published
May 16, 2026
Updated
May 16, 2026
Vendor
miniOrange
Product
Backup and Restore
Classifications
CWE-22, T1070.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 16, 2026CVE publishedPublication date reported by the CVE source.
  2. May 16, 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=1.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

miniOrange · Backup and Restoreversion=1.0.3

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1070.004File Deletion

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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