Unauthenticated script execution via unescaped page output
Published Aug 18, 2026 · Updated Aug 18, 2026
Cross-site scripting in Quill Forms through 5.7.1 allows remote attackers to run script in visitors' browsers via crafted input. Public records do not identify the affected parameter or template path, but Patchstack attributes the flaw to improper neutralization of attacker-controlled input before page output. No authentication is required; exploitation still depends on a victim loading a page or form view that renders the injected data.
Summary
What happened
Cross-site scripting in Quill Forms through 5.7.1 allows remote attackers to run script in visitors' browsers via crafted input. Public records do not identify the affected parameter or template path, but Patchstack attributes the flaw to improper neutralization of attacker-controlled input before page output. No authentication is required; exploitation still depends on a victim loading a page or form view that renders the injected data.
The record
- CVE
- CVE-2026-28568
- Published
- Aug 18, 2026
- Updated
- Aug 18, 2026
- Vendor
- Quill Forms
- Product
- Quill Forms
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 18, 2026CVE publishedPublication date reported by the CVE source.
- Aug 18, 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.
- Affected versionversion=n/a <=5.7.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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