CVE-2023-5311Public exploitNetwork attack vector

Subscriber-level code execution via unchecked .htaccess writes

Published Oct 25, 2023 · Updated Apr 8, 2026

Missing authorization in WPVNTeam WP EXtra 6.2 and earlier allows remote authenticated users to execute code through .htaccess writes. The register() function accepts subscriber-controlled htaccess_root, htaccess_content, or htaccess_includes values and writes them with file_put_contents() without a capability check. Subscriber-level access is sufficient to replace site-root rules or create rules under wp-content and wp-includes, enabling server-side execution.

CVSS severity8.8
High
EPSS probability1.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in WPVNTeam WP EXtra 6.2 and earlier allows remote authenticated users to execute code through .htaccess writes. The register() function accepts subscriber-controlled htaccess_root, htaccess_content, or htaccess_includes values and writes them with file_put_contents() without a capability check. Subscriber-level access is sufficient to replace site-root rules or create rules under wp-content and wp-includes, enabling server-side execution.

The record

CVE
CVE-2023-5311
Published
Oct 25, 2023
Updated
Apr 8, 2026
Vendor
WPVNTeam
Product
WP EXtra – One Click Optimize
Classifications
CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPVNTeam · WP EXtra – One Click Optimizeversion=0 <=6.2

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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