CVE-2026-61900 (GCVE-0-2026-61900)
Vulnerability from cvelistv5 – Published: 2026-07-20 18:34 – Updated: 2026-07-20 18:34
VLAI
EPSS
VEX
Title
Joomla Extension - dj-extensions.com - Unauthenticated arbitrary file upload in DJ-jDownloads < 4.1.6
Summary
The Joomla extension JDownloads is vulnerable to an unauthenticated file upload, leading to full RCE.
Severity
CWE
- CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.jdownloads.com/ | product |
| https://mysites.guru/blog/jdownloads-4-1-unauthen… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dj-extensions.com | jDownloads extension for Joomla |
Affected:
4.1.0-4.1.5
|
Credits
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"product": "jDownloads extension for Joomla",
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"credits": [
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"metrics": [
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"baseScore": 10,
"baseSeverity": "CRITICAL",
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"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
"version": "4.0",
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"vulnConfidentialityImpact": "HIGH",
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"description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
"lang": "en",
"type": "CWE"
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],
"providerMetadata": {
"dateUpdated": "2026-07-20T18:34:32.512Z",
"orgId": "6ff30186-7fb7-4ad9-be33-533e7b05e586",
"shortName": "Joomla"
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"references": [
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"tags": [
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"url": "https://www.jdownloads.com/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://mysites.guru/blog/jdownloads-4-1-unauthenticated-upload-flaw/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Joomla Extension - dj-extensions.com - Unauthenticated arbitrary file upload in DJ-jDownloads \u003c 4.1.6",
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"cveId": "CVE-2026-61900",
"datePublished": "2026-07-20T18:34:32.512Z",
"dateReserved": "2026-07-12T05:35:55.728Z",
"dateUpdated": "2026-07-20T18:34:32.512Z",
"state": "PUBLISHED"
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"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-61900",
"date": "2026-07-21",
"epss": "0.00263",
"percentile": "0.1786"
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"nvd": "{\"cve\":{\"id\":\"CVE-2026-61900\",\"sourceIdentifier\":\"security@joomla.org\",\"published\":\"2026-07-20T19:17:28.267\",\"lastModified\":\"2026-07-20T19:17:28.267\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Joomla extension JDownloads is vulnerable to an unauthenticated file upload, leading to full RCE.\"}],\"affected\":[{\"source\":\"security@joomla.org\",\"affectedData\":[{\"vendor\":\"dj-extensions.com\",\"product\":\"jDownloads extension for Joomla\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"4.1.0-4.1.5\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"security@joomla.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":10.0,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"HIGH\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"HIGH\",\"subIntegrityImpact\":\"HIGH\",\"subAvailabilityImpact\":\"HIGH\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"security@joomla.org\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-434\"}]}],\"references\":[{\"url\":\"https://mysites.guru/blog/jdownloads-4-1-unauthenticated-upload-flaw/\",\"source\":\"security@joomla.org\"},{\"url\":\"https://www.jdownloads.com/\",\"source\":\"security@joomla.org\"}]}}"
}
}
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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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