CVE-2024-11826Network attack vector

Stored XSS via unescaped shortcode attributes

Published Jan 7, 2025 · Updated May 20, 2026

Stored XSS in Quill Forms 3.10.0 and earlier allows remote authenticated users to inject scripts through the quillforms-popup shortcode. The shortcode handler inserts user-controlled attributes into generated HTML without sufficient sanitization or output escaping. Contributor-level access is required; the stored script runs in the browser of anyone who opens the affected page, enabling actions in that visitor's web context.

CVSS severity6.4
Medium
EPSS probability0.27%
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 Quill Forms 3.10.0 and earlier allows remote authenticated users to inject scripts through the quillforms-popup shortcode. The shortcode handler inserts user-controlled attributes into generated HTML without sufficient sanitization or output escaping. Contributor-level access is required; the stored script runs in the browser of anyone who opens the affected page, enabling actions in that visitor's web context.

The record

CVE
CVE-2024-11826
Published
Jan 7, 2025
Updated
May 20, 2026
Vendor
Quill Forms
Product
Quill Forms
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2025CVE publishedPublication date reported by the CVE source.
  2. May 20, 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=0 <=3.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Quill Forms · Quill Formsversion=0 <=3.10.0

Published CVSS scores

6.4WordfenceCVSS: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.

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
Privilegesauthenticated
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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