CVE-2026-66591 (GCVE-0-2026-66591)
Vulnerability from cvelistv5 – Published: 2026-08-18 22:15 – Updated: 2026-08-18 22:15 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Media LIbrary Assistant plugin <= 3.39 - Cross Site Scripting (XSS) vulnerability
Summary
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in David Lingren Media LIbrary Assistant allows Stored XSS.
This issue affects Media LIbrary Assistant: from n/a through 3.39.
Severity
6.5 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| David Lingren | Media LIbrary Assistant |
Affected:
n/a , ≤ 3.39
(custom)
|
guessed |
{
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"affected": [
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"collectionURL": "https://wordpress.org/plugins",
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"packageName": "media-library-assistant",
"product": "Media LIbrary Assistant",
"vendor": "David Lingren",
"versions": [
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"status": "unaffected"
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],
"lessThanOrEqual": "3.39",
"status": "affected",
"version": "n/a",
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"credits": [
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"type": "finder",
"user": "00000000-0000-4000-9000-000000000000",
"value": "Abdullah Kareem \"cyberkareem\" | Patchstack Bug Bounty Program"
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}
],
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}
],
"impacts": [
{
"capecId": "CAPEC-592",
"descriptions": [
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"lang": "en",
"value": "CAPEC-592 Stored XSS"
}
]
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"metrics": [
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"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
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"references": [
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"tags": [
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],
"url": "https://patchstack.com/database/wordpress/plugin/media-library-assistant/vulnerability/wordpress-media-library-assistant-plugin-3-39-cross-site-scripting-xss-vulnerability?_s_id=cve"
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],
"solutions": [
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"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Update the WordPress Media LIbrary Assistant Plugin to the latest available version (at least 3.40)."
}
],
"value": "Update the WordPress Media LIbrary Assistant Plugin to the latest available version (at least 3.40)."
}
],
"source": {
"discovery": "EXTERNAL"
},
"tags": [
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],
"title": "WordPress Media LIbrary Assistant plugin \u003c= 3.39 - Cross Site Scripting (XSS) vulnerability",
"x_generator": {
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"cveMetadata": {
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"cveId": "CVE-2026-66591",
"datePublished": "2026-08-18T22:15:08.546Z",
"dateReserved": "2026-07-27T14:00:04.572Z",
"dateUpdated": "2026-08-18T22:15:08.546Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2026-66591\",\"sourceIdentifier\":\"audit@patchstack.com\",\"published\":\"2026-08-18T23:17:04.917\",\"lastModified\":\"2026-08-18T23:17:04.917\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) vulnerability in David Lingren Media LIbrary Assistant allows Stored XSS.\\n\\nThis issue affects Media LIbrary Assistant: from n/a through 3.39.\"}],\"affected\":[{\"source\":\"audit@patchstack.com\",\"affectedData\":[{\"vendor\":\"David Lingren\",\"product\":\"Media LIbrary Assistant\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://wordpress.org/plugins\",\"packageName\":\"media-library-assistant\",\"versions\":[{\"version\":\"n/a\",\"lessThanOrEqual\":\"3.39\",\"versionType\":\"custom\",\"status\":\"affected\",\"changes\":[{\"at\":\"3.40\",\"status\":\"unaffected\"}]}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"audit@patchstack.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"REQUIRED\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.3,\"impactScore\":3.7}]},\"weaknesses\":[{\"source\":\"audit@patchstack.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://patchstack.com/database/wordpress/plugin/media-library-assistant/vulnerability/wordpress-media-library-assistant-plugin-3-39-cross-site-scripting-xss-vulnerability?_s_id=cve\",\"source\":\"audit@patchstack.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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