CVE-2023-5311: The WP EXtra plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capabili

Q: How do I fix CVE-2023-5311?

wp extra: upgrade to 6.3. Exact commands for each OS are on this page.

Q: Is CVE-2023-5311 being exploited?

CVE-2023-5311 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-2023-5311 affect?

CVE-2023-5311 affects wp extra. Severity is high (CVSS 8.8). 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, wit

Q: How urgent is CVE-2023-5311?

Priority 56/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2023-5311 is a high-severity flaw (CVSS 8.8) affecting wp extra. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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-2023-466

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-862
Published	2023-10-25
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: wpvnteam

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

Am I affected?

Timeline

2023-10-25 18:17 UTCPublished CVE record published
2026-06-17 06:48 UTCUpdated Record last modified

wpvnteam wp extra UPGRADE

Affected: < 6.3

Fixed in: 6.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-extra || rpm -q wp-extra || wp-extra --version

2. UPGRADE to 6.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-extra

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-extra

Note

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

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-2023-5311?

wp extra: upgrade to 6.3. Exact commands for each OS are on this page.

Is CVE-2023-5311 being exploited?

CVE-2023-5311 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-2023-5311 affect?

CVE-2023-5311 affects wp extra. Severity is high (CVSS 8.8). 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, wit

How urgent is CVE-2023-5311?

Priority 56/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities

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References

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