CVE-2021-47926Public exploitNetwork attack vector

Browser script execution via unescaped form names

Published May 10, 2026 · Updated May 10, 2026

Stored XSS in CodePeople Contact Form to Email 1.3.24 allows remote authenticated users to run scripts in other users' browsers. The form creation workflow stores a form name containing script markup and renders it unescaped on the form management page. An account able to create forms must save the payload, and another logged-in user must open the affected administration page, exposing that user's session or credentials.

CVSS severity5.1
Medium
EPSS probability0.19%
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 CodePeople Contact Form to Email 1.3.24 allows remote authenticated users to run scripts in other users' browsers. The form creation workflow stores a form name containing script markup and renders it unescaped on the form management page. An account able to create forms must save the payload, and another logged-in user must open the affected administration page, exposing that user's session or credentials.

The record

CVE
CVE-2021-47926
Published
May 10, 2026
Updated
May 10, 2026
Vendor
CodePeople
Product
Contact Form to Email
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 10, 2026CVE publishedPublication date reported by the CVE source.
  2. May 10, 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=1.3.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CodePeople · Contact Form to Emailversion=1.3.24

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

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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