CVE-2026-110761
ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | ilias-elearning e.v. |
| Product | ilias |
| Published | Oct 14, 2026 |
| Last Updated | Oct 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
ILIAS-eLearning e.V. / ILIAS
9.0 < 9.24 10.0 < 10.12 11.0 < 11.5
References
docu.ilias.de: https://docu.ilias.de/go/blog/15821/952 docu.ilias.de: https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=228077&ref_id=35 github.com: https://github.com/ILIAS-eLearning/ILIAS/commit/cf4e9c230edfd96fc94a1b1d355500aa8c6f1771 github.com: https://github.com/ILIAS-eLearning/ILIAS/commit/267d4645ea940f8f97d1a9838deff6a12097564d github.com: https://github.com/ILIAS-eLearning/ILIAS/commit/ac4684239641fb3dab2d636b53a61c46462d1208 github.com: https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilObjTest.php#L7364 github.com: https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilTestResultsImportParser.php#L225 github.com: https://github.com/ILIAS-eLearning/ILIAS vulncheck.com: https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-php-object-injection-via-test-results-import
Credits
André Schweigert (SchweigertIT)