CVE-2023-24420Network attack vector

Browser script execution via reflected unsanitized parameter

Published Jun 15, 2023 · Updated Apr 28, 2026

Reflected XSS in Zestard Technologies Admin side data storage for Contact Form 7 1.1.1 and earlier allows remote attackers to run scripts. Public records state only that an unspecified request parameter is returned without sanitization or output escaping; no parameter or code locus is disclosed. An unauthenticated attacker must induce a privileged user to follow a crafted request, after which script runs in that user's browser context and can alter or disclose site data.

CVSS severity7.1
High
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 Zestard Technologies Admin side data storage for Contact Form 7 1.1.1 and earlier allows remote attackers to run scripts. Public records state only that an unspecified request parameter is returned without sanitization or output escaping; no parameter or code locus is disclosed. An unauthenticated attacker must induce a privileged user to follow a crafted request, after which script runs in that user's browser context and can alter or disclose site data.

The record

CVE
CVE-2023-24420
Published
Jun 15, 2023
Updated
Apr 28, 2026
Vendor
Zestard Technologies
Product
Admin side data storage for Contact Form 7
Classifications
CWE-79, CAPEC-591, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 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=n/a <=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zestard Technologies · Admin side data storage for Contact Form 7version=n/a <=1.1.1

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

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')
CAPEC-591Reflected XSS
T1059.007JavaScript/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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