CVE-2023-6266: The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient pat

Q: How do I fix CVE-2023-6266?

backup migration: upgrade to newer than 1.3.6. Exact commands for each OS are on this page.

Q: Is CVE-2023-6266 being exploited?

CVE-2023-6266 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-6266 affect?

CVE-2023-6266 affects backup migration. Severity is high (CVSS 7.5). The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This

Q: How urgent is CVE-2023-6266?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2023-6266 is a high-severity flaw (CVSS 7.5) affecting backup migration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This makes it possible for unauthenticated attackers to download back-up files which can contain sensitive information such as user passwords, PII, database credentials, and much more.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-200, CWE-552
Published	2024-01-11
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: backupbliss

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-11 09:15 UTCPublished CVE record published
2026-06-17 06:50 UTCUpdated Record last modified

backupbliss backup migration UPGRADE

Affected: <= 1.3.6

Fixed in: newer than 1.3.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy backup-migration || rpm -q backup-migration || backup-migration --version

2. UPGRADE to newer than 1.3.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade backup-migration

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade backup-migration

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: WordPress Backup Migration <= 1.3.6 - Path Traversal

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-6266?

backup migration: upgrade to newer than 1.3.6. Exact commands for each OS are on this page.

Is CVE-2023-6266 being exploited?

CVE-2023-6266 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-6266 affect?

CVE-2023-6266 affects backup migration. Severity is high (CVSS 7.5). The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and file validation on the BMI_BACKUP case of the handle_downloading function in all versions up to, and including, 1.3.6. This

How urgent is CVE-2023-6266?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

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References

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