Stored XSS via unencoded activity-log filenames
Published Jul 7, 2026 · Updated Jul 7, 2026
Stored XSS in LiquidFiles 4.2.7 allows remote authenticated users to execute JavaScript in a victim's browser through a Share API filename. The JSON Share API accepts HTML in a file name, and renaming that file stores the original name in an activity log that renders it without HTML encoding. Low-privileged access and a victim viewing that log are required; a CSP-bypass chain can redirect the victim to attacker-controlled HTML and expose an administrator API key.
Summary
What happened
Stored XSS in LiquidFiles 4.2.7 allows remote authenticated users to execute JavaScript in a victim's browser through a Share API filename. The JSON Share API accepts HTML in a file name, and renaming that file stores the original name in an activity log that renders it without HTML encoding. Low-privileged access and a victim viewing that log are required; a CSP-bypass chain can redirect the victim to attacker-controlled HTML and expose an administrator API key.
The record
- CVE
- CVE-2026-36162
- Published
- Jul 7, 2026
- Updated
- Jul 7, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1204.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 7, 2026CVE publishedPublication date reported by the CVE source.
- Jul 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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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
- LiquidFiles stored XSS and CSP-bypass demonstrationfunctional · demonstrated
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Technologies
Your stack
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Your stack
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