CVE-2026-6227 json
BackWPup <= 5.6.6 - Authenticated (Administrator+) Local File Inclusion via 'block_name' Parameter
published 6mo ago modified 4mo ago also EUVD-2026-22201
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
The BackWPup plugin for WordPress is vulnerable to Local File Inclusion via the `block_name` parameter of the `/wp-json/backwpup/v1/getblock` REST endpoint in all versions up to, and including, 5.6.6 due to a non-recursive `str_replace()` sanitization of path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to include arbitrary PHP files on the server via crafted traversal sequences (e.g., `....//`), which can be leveraged to read sensitive files such as `wp-config.php` or achieve remote code execution in certain configurations. Administrators have the ability to grant individual users permission to handle backups, which may then allow lower-level users to exploit this vulnerability.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6mo ago
Exploit prediction
1.34% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- wp_media BackWPup – WordPress Backup & Restore Plugin
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/084e3f78-275b-4692-9cce-e17074f55cfb?source=cve
- plugins.trac.wordpress.org /browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L23
- plugins.trac.wordpress.org /browser/backwpup/trunk/inc/Utils/BackWPupHelpers.php#L23
- plugins.trac.wordpress.org /browser/backwpup/tags/5.6.5/inc/Utils/BackWPupHelpers.php#L40
- plugins.trac.wordpress.org /browser/backwpup/tags/5.6.5/src/Frontend/API/Rest.php#L52
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&new=3490642%40backwpup%2Ftrunk&old=3475739%40backwpup%2Ftrunk&sfp_e
Sources
- CVE List CVE-2026-6227
- NVD CVE-2026-6227
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.