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    2 vulnerabilities found for ILIAS by ILIAS-eLearning e.V.

    CVE-2026-80428 (GCVE-0-2026-80428)

    Vulnerability from nvd – Published: 2026-08-26 15:44 – Updated: 2026-08-29 02:41
    VLAI
    Title
    ILIAS before 9.22, 10.10 and 11.3 Unauthenticated PHP Object Injection via Shibboleth Logout Endpoint
    Summary
    ILIAS deserialises stored session data for an unauthenticated caller. The Shibboleth back-channel endpoint at components/ILIAS/AuthShibboleth/resources/shib_logout.php runs in a context that ilInitialisation exempts from authentication, and its logout-notification handler locates the session to terminate by reading every live row of the session table and passing each row's stored data to a hand-written parser that calls unserialize without restricting which classes may be constructed. Any serialised object present in any session row is therefore instantiated on behalf of an anonymous request, and object destructors run when those objects are discarded. A serialised object can be placed into a session row without logging in, because the LTI authentication entry point stores request parameters into the session and is reachable on a path the same initialisation code exempts from authentication. A class bundled with the application writes a JSON-encoded structure to a file named by one of its own properties when it is destroyed, which places attacker-controlled content at an attacker-chosen path below the web root and results in code execution as the web server user. Versions 9.22, 10.10 and 11.3 remove the endpoint's logout-notification implementation.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    9.8 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-29 02:41 UTC
    CWE
    • CWE-502 - Deserialization of Untrusted Data
    Assigner
    References
    Impacted products
    Vendor Product Version
    ILIAS-eLearning e.V. ILIAS Affected: 0 , < 9.22 (custom)
    Affected: 10.0 , < 10.10 (custom)
    Affected: 11.0 , < 11.3 (custom)
        cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
        cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
        cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-08-26 00:00
    Credits
    André Schweigert
    Show details on NVD website
    To clipboard 

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    CVE-2026-80428 (GCVE-0-2026-80428)

    Vulnerability from cvelistv5 – Published: 2026-08-26 15:44 – Updated: 2026-08-29 02:41
    VLAI
    Title
    ILIAS before 9.22, 10.10 and 11.3 Unauthenticated PHP Object Injection via Shibboleth Logout Endpoint
    Summary
    ILIAS deserialises stored session data for an unauthenticated caller. The Shibboleth back-channel endpoint at components/ILIAS/AuthShibboleth/resources/shib_logout.php runs in a context that ilInitialisation exempts from authentication, and its logout-notification handler locates the session to terminate by reading every live row of the session table and passing each row's stored data to a hand-written parser that calls unserialize without restricting which classes may be constructed. Any serialised object present in any session row is therefore instantiated on behalf of an anonymous request, and object destructors run when those objects are discarded. A serialised object can be placed into a session row without logging in, because the LTI authentication entry point stores request parameters into the session and is reachable on a path the same initialisation code exempts from authentication. A class bundled with the application writes a JSON-encoded structure to a file named by one of its own properties when it is destroyed, which places attacker-controlled content at an attacker-chosen path below the web root and results in code execution as the web server user. Versions 9.22, 10.10 and 11.3 remove the endpoint's logout-notification implementation.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    9.8 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: yes Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-29 02:41 UTC
    CWE
    • CWE-502 - Deserialization of Untrusted Data
    Assigner
    References
    Impacted products
    Vendor Product Version
    ILIAS-eLearning e.V. ILIAS Affected: 0 , < 9.22 (custom)
    Affected: 10.0 , < 10.10 (custom)
    Affected: 11.0 , < 11.3 (custom)
        cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
        cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
        cpe:2.3:a:ilias:ilias:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Date Public
    2026-08-26 00:00
    Credits
    André Schweigert
    Show details on NVD website
    To clipboard 

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