Contributor-level stored XSS via Settings tabs
Published Aug 18, 2026 · Updated Aug 18, 2026
Stored XSS in Settings tabs in David Lingren Media Library Assistant before 3.40 allows remote authenticated users to inject script. The 3.40 changelog ties the flaw to five Settings tabs, indicating that contributor-supplied option values were stored and later rendered without sufficient escaping in the plugin's administrative settings views. Patchstack lists Contributor as the required privilege and user interaction as required, so exploitation depends on a lower-privileged user planting a payload that another user later loads in the WordPress admin interface.
Summary
What happened
Stored XSS in Settings tabs in David Lingren Media Library Assistant before 3.40 allows remote authenticated users to inject script. The 3.40 changelog ties the flaw to five Settings tabs, indicating that contributor-supplied option values were stored and later rendered without sufficient escaping in the plugin's administrative settings views. Patchstack lists Contributor as the required privilege and user interaction as required, so exploitation depends on a lower-privileged user planting a payload that another user later loads in the WordPress admin interface.
The record
- CVE
- CVE-2026-66591
- Published
- Aug 18, 2026
- Updated
- Aug 18, 2026
- Vendor
- David Lingren
- Product
- Media Library Assistant
- Classifications
- CWE-79, CAPEC-592, T1059.007
- Attack vector
- network
- Privileges
- authenticated
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
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=n/a <=3.39 changes=[{"at":"3.40","status":"unaffected"}]
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo