CVE-2024-8739Network attack vector

Reflected XSS via unescaped add_query_arg URL

Published Nov 2, 2024 · Updated Apr 8, 2026

Reflected XSS in ReCaptcha Integration for WordPress 1.2.5 and earlier allows remote attackers to execute scripts via a crafted URL. The options-page code places a URL built with add_query_arg into an HTML link without esc_url, allowing query-string content to enter the page. Execution requires a user to follow the crafted link, and the script runs in that user's browser context.

CVSS severity6.1
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in ReCaptcha Integration for WordPress 1.2.5 and earlier allows remote attackers to execute scripts via a crafted URL. The options-page code places a URL built with add_query_arg into an HTML link without esc_url, allowing query-string content to enter the page. Execution requires a user to follow the crafted link, and the script runs in that user's browser context.

The record

CVE
CVE-2024-8739
Published
Nov 2, 2024
Updated
Apr 8, 2026
Vendor
HappyAddons
Product
ReCaptcha Integration for WordPress
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 2, 2024CVE 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 <=1.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HappyAddons · ReCaptcha Integration for WordPressversion=0 <=1.2.5

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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')
T1204.001Malicious Link

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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