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…

PriorityP356high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

0.57%

46.1th percentile

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
ilias-elearning_e.v	ilias	>= 10.0 < 10.12	10.12
ilias-elearning_e.v	ilias	>= 11.0 < 11.5	11.5
ilias-elearning_e.v	ilias	>= 9.0 < 9.24	9.24

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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

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