CVE-2024-10884Network attack vector

Reflected XSS via unescaped URL construction

Published Nov 16, 2024 · Updated Apr 8, 2026

Reflected XSS in SimpleForm Contact Form Submissions 2.1.0 and earlier allows remote attackers to inject scripts via crafted URLs. The entries-list code uses add_query_arg() and remove_query_arg() to construct a URL that is output without appropriate escaping. Successful exploitation requires a victim to click an attacker-crafted link and executes the injected script in that user’s browser session.

CVSS severity6.1
Medium
EPSS probability0.38%
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 SimpleForm Contact Form Submissions 2.1.0 and earlier allows remote attackers to inject scripts via crafted URLs. The entries-list code uses add_query_arg() and remove_query_arg() to construct a URL that is output without appropriate escaping. Successful exploitation requires a victim to click an attacker-crafted link and executes the injected script in that user’s browser session.

The record

CVE
CVE-2024-10884
Published
Nov 16, 2024
Updated
Apr 8, 2026
Vendor
SimpleForm
Product
SimpleForm Contact Form Submissions
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 16, 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 <=2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SimpleForm · SimpleForm Contact Form Submissionsversion=0 <=2.1.0

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.

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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')

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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