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ILIAS CVE-2026-85135

| EUVDEUVD-2026-70478 MEDIUM
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-09-03 VulDB GHSA-vcg5-7xpv-mqv2
PHP File Upload Ilias N A
5.3
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) PRIMARY
5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/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
vuln.today AI
9.9 CRITICAL

CWE-434 in PHP app enables webshell upload; AC:L for the upload step; S:C/C:H/I:H/A:H reflects RCE if PHP executes in the target directory.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

2
Source Code Evidence Fetched
Sep 03, 2026 - 15:02 vuln.today
Analysis Generated
Sep 03, 2026 - 15:02 vuln.today

DescriptionCVE.org

A security flaw has been discovered in ILIAS up to 9.21/10.9/11.2. This affects the function ilObjMediaObjectGUI::uploadMultipleSubtitleFileObject of the file Services/Repository/Service/Resources/ZipAdapter.php of the component MediaPool. The manipulation results in unrestricted upload. The attack may be launched remotely. Upgrading to version 9.22, 10.10 and 11.3 is able to mitigate this issue. The patch is identified as ef5d7f99fe1ea0381db04b333a2906548b3590e4/b0d61be43671b6bfe91baf469a5ee11e764f2e23. It is recommended to upgrade the affected component.

AnalysisAI

Unrestricted file upload via ZIP extraction in ILIAS MediaPool allows authenticated low-privilege users to bypass extension controls through the subtitle bulk-upload endpoint (uploadMultipleSubtitleFileObject backed by ZipAdapter), placing arbitrary file types - including PHP scripts - into server directories. Versions 9.x through 9.21, 10.x through 10.9, and 11.x through 11.2 across all active release branches are affected. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid ILIAS account with at least low-privilege write access to a MediaPool object; CVSS PR:L confirms that course-member or contributor roles are sufficient - administrative credentials are not required. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The VulDB-supplied CVSS 4.0 score of 5.3 (PR:L, VC:L/VI:L/VA:L) is notably conservative for a CWE-434 in a PHP application. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade ILIAS to version 9.22, 10.10, or 11.3, which contain the dual fix implemented in commits `ef5d7f99fe1ea0381db04b333a2906548b3590e4` and `b0d61be43671b6bfe91baf469a5ee11e764f2e23`; the v11.3 release is available at https://github.com/ILIAS-eLearning/ILIAS/releases/tag/v11.3. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-85135 vulnerability details – vuln.today
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