CVE-2026-82877 ILIAS-eLearning e.V. CVE debrief

Who should care

Administrators and users of ILIAS versions before 9.22, 10.0 through 10.9, and 11.0 through 11.2, as well as security teams monitoring for potential SOAP interface abuse, should be aware of this vulnerability. Affected organizations should assess their deployments, restrict access to the SOAP interface, and apply vendor patches or updates when available. Security teams should monitor for suspicious activity on the SOAP interface and review compensating controls for exposed systems while remediation is scheduled and verified. Vulnerability management and security teams should prioritize patching or mitigating this vulnerability to prevent potential sensitive file disclosure and unauthorized access to server files. Additionally, operators and platform administrators should verify ILIAS version deployments and ensure proper access controls are in place to prevent exploitation of this vulnerability. This may involve reviewing current ILIAS versions, assessing exposure, and implementing compensating controls until patches are applied. Security teams should also consider tracking exceptions, retesting remediated assets, and documenting evidence of remediation efforts to ensure thorough vulnerability management. The vulnerability's impact on operational security and potential data exposure necessitates prompt attention from affected organizations and security teams to mitigate risks associated with this arbitrary file read vulnerability in ILIAS systems. Monitoring and detection capabilities should be reviewed to ensure they can identify potential exploitation attempts on the SOAP interface. Asset inventory and configuration management processes should be updated to reflect the presence of this vulnerability and track remediation efforts effectively. Overall, a coordinated effort between administrators, security teams, and operators is required to address this vulnerability comprehensively and minimize potential risks to ILIAS deployments. This includes verifying affected systems, implementing compensating controls, and applying patches or updates as they become available to prevent exploitation and protect sensitive information from unauthorized access through this I.

Technical summary

The ILIAS SOAP addFile method allows authenticated users to read server files by supplying crafted XML with COPY-mode imports, potentially leading to sensitive file disclosure. This vulnerability affects ILIAS versions before 9.22, 10.0 through 10.9, and 11.0 through 11.2. The vulnerability is due to an unsandboxed import directory that allows attackers to construct absolute file paths and retrieve sensitive files, including configuration files containing database credentials and setup passwords.

Defensive priority

Authenticated users with access to the SOAP interface may be able to read sensitive files.

Recommended defensive actions

• Inventory and verify ILIAS versions before 9.22, 10.0 through 10.9, and 11.0 through 11.2 are in use
• Restrict access to the SOAP interface to only necessary users
• Monitor for suspicious activity on the SOAP interface
• Apply vendor patches or updates when available
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in ILIAS versions before 9.22, 10.0 through 10.9, and 11.0 through 11.2, but further analysis is needed to determine the full scope of affected systems and potential mitigations. The vulnerability allows authenticated users to read server files by supplying crafted XML with COPY-mode imports through the SOAP addFile method. Evidence is limited to public sources and may not reflect all affected deployments or specific configurations. Defenders should verify ILIAS version deployments, review SOAP interface access controls, and monitor for suspicious activity.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.