CVE-2026-16586 (GCVE-0-2026-16586)
Vulnerability from cvelistv5 – Published: 2026-08-15 03:25 – Updated: 2026-08-15 03:25
VLAI
EPSS
VEX
Title
Contest Gallery <= 30.0.6 - Authenticated (Author+) Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId'
Summary
The Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe plugin for WordPress is vulnerable to Second-Order SQL Injection via MultipleFiles Second-Order Payload via 'cg_multiple_files_for_post' -> 'cgRealId' in all versions up to, and including, 30.0.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Severity
6.5 (Medium)
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
References
12 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| contest-gallery | Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe |
Affected:
0 , ≤ 30.0.7
(semver)
|
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"affected": [
{
"defaultStatus": "unaffected",
"product": "Contest Gallery \u2013 Upload \u0026 Vote Photos, Media, Sell with PayPal \u0026 Stripe",
"vendor": "contest-gallery",
"versions": [
{
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"status": "affected",
"version": "0",
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}
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"value": "The Contest Gallery \u2013 Upload \u0026 Vote Photos, Media, Sell with PayPal \u0026 Stripe plugin for WordPress is vulnerable to Second-Order SQL Injection via MultipleFiles Second-Order Payload via \u0027cg_multiple_files_for_post\u0027 -\u003e \u0027cgRealId\u0027 in all versions up to, and including, 30.0.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database."
}
],
"metrics": [
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"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-89",
"description": "CWE-89 Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-15T03:25:57.860Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/294e1822-b92c-48a4-bfc6-5a89cfbe0bc7?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/ajax/ajax-functions-backend.php#L310"
},
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},
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},
{
"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L475"
},
{
"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L683"
},
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"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/ajax/ajax-functions-backend.php#L286"
},
{
"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/ajax/ajax-functions-backend.php#L135"
},
{
"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L475"
},
{
"url": "https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L683"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3631928%40contest-gallery\u0026new=3631928%40contest-gallery"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-07-22T14:01:23.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-08-14T15:01:25.000Z",
"value": "Disclosed"
}
],
"title": "Contest Gallery \u003c= 30.0.6 - Authenticated (Author+) Second-Order SQL Injection via MultipleFiles Second-Order Payload via \u0027cg_multiple_files_for_post\u0027 -\u003e \u0027cgRealId\u0027"
}
},
"cveMetadata": {
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"cveId": "CVE-2026-16586",
"datePublished": "2026-08-15T03:25:57.860Z",
"dateReserved": "2026-07-22T13:45:47.903Z",
"dateUpdated": "2026-08-15T03:25:57.860Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-16586",
"date": "2026-08-16",
"epss": "0.00328",
"percentile": "0.25741"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-16586\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-08-15T04:18:10.607\",\"lastModified\":\"2026-08-15T04:18:10.607\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Contest Gallery \u2013 Upload \u0026 Vote Photos, Media, Sell with PayPal \u0026 Stripe plugin for WordPress is vulnerable to Second-Order SQL Injection via MultipleFiles Second-Order Payload via \u0027cg_multiple_files_for_post\u0027 -\u003e \u0027cgRealId\u0027 in all versions up to, and including, 30.0.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with author-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"contest-gallery\",\"product\":\"Contest Gallery \u2013 Upload \u0026 Vote Photos, Media, Sell with PayPal \u0026 Stripe\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"30.0.7\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-89\"}]}],\"references\":[{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/ajax/ajax-functions-backend.php#L135\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/ajax/ajax-functions-backend.php#L286\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/ajax/ajax-functions-backend.php#L310\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L475\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.6/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L683\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/ajax/ajax-functions-backend.php#L135\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/ajax/ajax-functions-backend.php#L286\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/ajax/ajax-functions-backend.php#L310\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L475\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/contest-gallery/tags/30.0.7/v10/v10-admin/gallery/change-gallery/0_change-gallery.php#L683\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3631928%40contest-gallery\u0026new=3631928%40contest-gallery\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/294e1822-b92c-48a4-bfc6-5a89cfbe0bc7?source=cve\",\"source\":\"security@wordfence.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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