HIGH

CVE-2023-5311

CVSS v3

8.8

HIGH

EPSS Score

1.4 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2023-5311 yet.

Full record on NVD

Description

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.

Technical details

Published: 2023-10-25

Frequently asked questions

What is CVE-2023-5311?

Is CVE-2023-5311 actively exploited?

Active exploitation of CVE-2023-5311 has not been confirmed. Its EPSS score was 1.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-5311?

CVE-2023-5311 has a CVSS v3 base score of 8.8 (HIGH severity).

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