CVE-2026-92798Network attack vectorHinoki check available

Unauthenticated shortcode execution via unsanitized referrer smart tag

Published Oct 17, 2026 · Updated Oct 17, 2026

Shortcode injection in WPEverest User Registration & Membership 5.2.8 and earlier allows remote attackers to run registered shortcodes. UR_Smart_Tags::process() sanitizes HTTP_REFERER as text without removing shortcode delimiters, then inserts it into a content-restriction message processed by apply_shortcodes()/do_shortcode(). No login is required when that message contains {{referrer_url}}; consequences depend on the registered shortcodes available on the site.

CVSS severityUnavailable
Unscored
EPSS probability0.37%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Shortcode injection in WPEverest User Registration & Membership 5.2.8 and earlier allows remote attackers to run registered shortcodes. UR_Smart_Tags::process() sanitizes HTTP_REFERER as text without removing shortcode delimiters, then inserts it into a content-restriction message processed by apply_shortcodes()/do_shortcode(). No login is required when that message contains {{referrer_url}}; consequences depend on the registered shortcodes available on the site.

The record

CVE
CVE-2026-92798
Published
Oct 17, 2026
Updated
Oct 17, 2026
Vendor
WPEverest
Product
User Registration & Membership
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 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 <=5.2.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPEverest · User Registration & Membershipversion=0 <=5.2.8

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

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