CVE-2025-6174Public exploitNetwork attack vector

Browser script execution via unescaped stylesheet parameter

Published Jul 23, 2025 · Updated Jul 23, 2025

Reflected XSS in Dan Kirshner Qwizcards 3.9.4 and earlier allows remote attackers to execute scripts in a user's browser via a crafted URL. The qwiz_admin_sample_buttons.php endpoint inserts the theme_stylesheet query value into its HTML response without sanitization or output escaping. Execution requires a user to open the crafted link; the injected script then runs with that user's access to the affected site's origin.

CVSS severity6.1
Medium
EPSS probability0.46%
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 Dan Kirshner Qwizcards 3.9.4 and earlier allows remote attackers to execute scripts in a user's browser via a crafted URL. The qwiz_admin_sample_buttons.php endpoint inserts the theme_stylesheet query value into its HTML response without sanitization or output escaping. Execution requires a user to open the crafted link; the injected script then runs with that user's access to the affected site's origin.

The record

CVE
CVE-2025-6174
Published
Jul 23, 2025
Updated
Jul 23, 2025
Vendor
Dan Kirshner
Product
Qwizcards
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 2025Record 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 <=3.9.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dan Kirshner · Qwizcardsversion=0 <=3.9.4

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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