CVE-2026-2374Network attack vector

Unauthenticated stored XSS via unescaped PHP_SELF

Published May 28, 2026 · Updated May 28, 2026

Stored XSS in Robert Peake's Login No Captcha reCAPTCHA 1.8.0 and earlier allows remote attackers to inject scripts via PHP_SELF. The authenticate() function stores unsanitized basename($_SERVER['PHP_SELF']) data in the login_nocaptcha_error option, and admin_notices() emits it without HTML escaping. Execution requires an administrator from a whitelisted IP address to open the dashboard within 30 seconds, exposing the administrator's browser session to attacker-controlled script actions.

CVSS severity7.2
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Robert Peake's Login No Captcha reCAPTCHA 1.8.0 and earlier allows remote attackers to inject scripts via PHP_SELF. The authenticate() function stores unsanitized basename($_SERVER['PHP_SELF']) data in the login_nocaptcha_error option, and admin_notices() emits it without HTML escaping. Execution requires an administrator from a whitelisted IP address to open the dashboard within 30 seconds, exposing the administrator's browser session to attacker-controlled script actions.

The record

CVE
CVE-2026-2374
Published
May 28, 2026
Updated
May 28, 2026
Vendor
Robert Peake
Product
Login No Captcha reCAPTCHA
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 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 <=1.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Robert Peake · Login No Captcha reCAPTCHAversion=0 <=1.8.0

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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