CVE-2024-11376Network attack vector

Browser script execution via unescaped add_query_arg URL

Published Feb 18, 2025 · Updated Apr 8, 2026

Reflected XSS in the s2Member WordPress plugin 241216 and earlier allows remote attackers to inject scripts through crafted URLs. In s2member.php, line 210 uses add_query_arg to construct a URL that is emitted without context-appropriate escaping. Exploitation requires an unauthenticated attacker to persuade a user to follow a crafted link, causing attacker-supplied JavaScript to run 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 the s2Member WordPress plugin 241216 and earlier allows remote attackers to inject scripts through crafted URLs. In s2member.php, line 210 uses add_query_arg to construct a URL that is emitted without context-appropriate escaping. Exploitation requires an unauthenticated attacker to persuade a user to follow a crafted link, causing attacker-supplied JavaScript to run in that user's browser context.

The record

CVE
CVE-2024-11376
Published
Feb 18, 2025
Updated
Apr 8, 2026
Vendor
Cristián Lávaque
Product
s2Member
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 18, 2025CVE 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 <=241216

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cristián Lávaque · s2Memberversion=0 <=241216

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1204.001User Execution: Malicious Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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