CVE-2023-5311
Published: 25 October 2023
Summary
CVE-2023-5311 is a high-severity Missing Authorization (CWE-862) vulnerability in Wpvnteam Wp Extra. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 8.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
The vulnerability CVE-2023-5311 is a missing capability check (CWE-862) in the register() function of the WP EXtra plugin for WordPress, affecting all versions through 6.2. The issue permits unauthorized modification of data and carries a CVSS 3.1 score of 8.8; it is also listed as a duplicate of CVE-2023-46623.
Authenticated attackers holding subscriber-level access or higher can exploit the flaw over the network to alter .htaccess files located in the site root, /wp-content, or /wp-includes directories, resulting in remote code execution.
The official plugin repository contains changeset 2977703 that corrects the missing authorization check. Public advisories, including those published by Wordfence, advise site administrators to apply the available update immediately.
EPSS scores have remained low and stable near 0.06 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-57634
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring an access control policy ensures authorization checks are defined and applied for critical functions.
Reviews of access controls detect missing authorization checks on critical functions or resources.
Documenting permitted unauthenticated actions prevents missing authorization by making all exceptions explicit and subject to organizational review.
Requiring attribute association with information prevents authorization from being performed without necessary security or privacy context.
Mandating authorization prior to allowing remote connections addresses missing authorization for remote access.
Mandating authorization before wireless connections are allowed prevents missing authorization for wireless access.
The control requires authorization before allowing mobile device connections, directly mitigating missing authorization for system access.
Requiring approvals for account creation and specifying authorizations ensures authorization is not missing for system access.