CVE-2023-5311 json
WP EXtra <= 6.2 - Missing Authorization to .htaccess File Modification
published 2023-10-25 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57634
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
The WP EXtra plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the register() function in versions up to, and including, 6.2. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to modify the contents of the .htaccess files located in a site's root directory or /wp-content and /wp-includes folders and achieve remote code execution. CVE-2023-46623 appears to be a duplicate of this issue.
Patch / fix
- wpvnteam wp_extra 6.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- giongfnef.gitbook.io https://giongfnef.gitbook.io/giongfnef/cve/cve-2023-5311 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- wpvncom WP EXtra – One Click Optimize
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
-
wordfence.com
/threat-intel/vulnerabilities/id/87e3dd5e-0d77-4d78-8171-0beaf9482699?source=cve
patch, third-party-advisory
-
plugins.trac.wordpress.org
/changeset/2977703/wp-extra
patch
-
giongfnef.gitbook.io
/giongfnef/cve/cve-2023-5311
exploit, third-party-advisory
Sources
- CVE List CVE-2023-5311
- NVD CVE-2023-5311
Fencer Vulns 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.