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    CVE-2026-110761

    ILIAS before 9.24, 10.12, and 11.5 contains a PHP object injection vulnerability that allows authenticated users with Test creation or import permission to deserialize arbitrary objects via crafted Test archives. Attackers can inject a malicious tst_sequence sequence attribute that is passed to unserialize(), abusing Guzzle or Monolog gadget chains to write PHP files and execute code.

    Published:Oct 14, 2026
    Last Modified:Oct 14, 2026
    EPS:Oct 14, 2026
    EPSS Score:
    CVSS Score:8.8

    Affected Products

    Vendor
    Ilias
    Product
    Ilias

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Related CVEs

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    CVE-2026-107639 (CVSS 8.7) — ILIAS before 9.24, 10.x before 10.12 and 11.x before 11.5 contains an argument injection vulnerability in assI…
    CVE-2023-32778 (CVSS 3.3) — An issue was discovered in ILIAS 6.23, 7 before 7.22, and 8.1. An attacker can execute arbitrary code via ZIP …
    CVE-2026-86416 (CVSS 5.3) — ILIAS versions before 9.23, 10.11, and 11.4 contain an authorization bypass vulnerability in ilObjGroupGUI whe…
    CVE-2026-82538 (CVSS 8.7) — ILIAS before versions 9.22, 10.10, and 11.3 contains a SQL injection vulnerability in the repository trash tab…
    CVE-2026-85135 (CVSS 5.3) — A security flaw has been discovered in ILIAS up to 9.21/10.9/11.2. This affects the function ilObjMediaObjectG…
    CVE-2026-82877 (CVSS 7.1) — ILIAS before versions 9.22, 10.10, and 11.3 contains an arbitrary file read vulnerability in the SOAP addFile …
    CVE-2026-80428 (CVSS 9.3) — ILIAS before versions 9.22, 10.10, and 11.3 contains an unauthenticated PHP object injection vulnerability tha…
    CVE-2020-36944 (CVSS 6.9) — ILIAS Learning Management System 4.3 contains a server-side request forgery vulnerability that allows attacker…
    CVE-2025-11346 (CVSS 5.3) — A vulnerability has been found in ILIAS up to 8.23/9.13/10.1. This affects the function unserialize of the com…

    References

    https://docu.ilias.de/go/blog/15821/952
    https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=228077&ref_id=35
    https://github.com/ILIAS-eLearning/ILIAS
    https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilObjTest.php#L7364
    https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilTestResultsImportParser.php#L225
    https://github.com/ILIAS-eLearning/ILIAS/commit/267d4645ea940f8f97d1a9838deff6a12097564d
    https://github.com/ILIAS-eLearning/ILIAS/commit/ac4684239641fb3dab2d636b53a61c46462d1208
    https://github.com/ILIAS-eLearning/ILIAS/commit/cf4e9c230edfd96fc94a1b1d355500aa8c6f1771
    https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-php-object-injection-via-test-results-import

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High