CVE-2023-48752Network attack vector

Reflected XSS via unescaped hidden-field attributes

Published Nov 30, 2023 · Updated Apr 28, 2026

Reflected XSS in The Theme Foundry Happyforms 1.25.9 and earlier allows remote attackers to run script via hidden-field attributes. The plugin renders attacker-controlled hidden-field attribute content into a generated page without sufficient output neutralization; the public changelog does not identify the exact attribute or code path. Exploitation is unauthenticated but requires a user to open the crafted response, enabling script execution in that user's browser context.

CVSS severity7.1
High
EPSS probability0.41%
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 Theme Foundry Happyforms 1.25.9 and earlier allows remote attackers to run script via hidden-field attributes. The plugin renders attacker-controlled hidden-field attribute content into a generated page without sufficient output neutralization; the public changelog does not identify the exact attribute or code path. Exploitation is unauthenticated but requires a user to open the crafted response, enabling script execution in that user's browser context.

The record

CVE
CVE-2023-48752
Published
Nov 30, 2023
Updated
Apr 28, 2026
Vendor
The Theme Foundry
Product
Happyforms
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 30, 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 <=1.25.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Theme Foundry · Happyformsversion=n/a <=1.25.9

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
6.1NVDCVSS: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')
T1189Drive-by Compromise

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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