CVE-2026-5415Network attack vector

Subscriber-to-Administrator takeover via temporary login links

Published Jun 5, 2026 · Updated Jun 5, 2026

Authentication bypass in WebFactory WP Captcha PRO 5.38 and earlier allows remote authenticated users to log in as administrators. The ajax_run_tool() handler checks only a nonce and no capability before create_temporary_link generates a passwordless link for any user; handle_temporary_links() then accepts that link without further authorization. Subscriber access is sufficient when the welcome pointer remains undismissed because wp_localize_script() exposes the nonce on non-settings administration pages, enabling complete administrator account takeover.

CVSS severity8.8
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in WebFactory WP Captcha PRO 5.38 and earlier allows remote authenticated users to log in as administrators. The ajax_run_tool() handler checks only a nonce and no capability before create_temporary_link generates a passwordless link for any user; handle_temporary_links() then accepts that link without further authorization. Subscriber access is sufficient when the welcome pointer remains undismissed because wp_localize_script() exposes the nonce on non-settings administration pages, enabling complete administrator account takeover.

The record

CVE
CVE-2026-5415
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
WebFactory Ltd
Product
WP Captcha
Classifications
CWE-288, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 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 <=5.38

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WebFactory Ltd · WP Captchaversion=0 <=5.38

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.

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

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-288Authentication Bypass Using an Alternate Path or Channel
T1068Exploitation for Privilege Escalation

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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Your stack

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