CVE-2024-22149Network attack vector

Stored XSS via unescaped form output

Published Mar 27, 2024 · Updated Apr 28, 2026

Stored XSS in Oliver Seidel and Bastian Germann cformsII 15.0.5 and earlier allows remote attackers to run script in a victim's browser. The plugin emits stored, attacker-controlled form content into generated pages without output escaping; public sources do not identify the affected field or function. Exploitation requires a victim to view the stored content, and the script executes with that user's site origin and browser-session privileges.

CVSS severity7.1
High
EPSS probability0.37%
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 Oliver Seidel and Bastian Germann cformsII 15.0.5 and earlier allows remote attackers to run script in a victim's browser. The plugin emits stored, attacker-controlled form content into generated pages without output escaping; public sources do not identify the affected field or function. Exploitation requires a victim to view the stored content, and the script executes with that user's site origin and browser-session privileges.

The record

CVE
CVE-2024-22149
Published
Mar 27, 2024
Updated
Apr 28, 2026
Vendor
Oliver Seidel, Bastian Germann
Product
cformsII
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2024CVE 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 <=15.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oliver Seidel, Bastian Germann · cformsIIversion=n/a <=15.0.5

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 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')
CAPEC-592Stored 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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