CVE-2026-110761
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
ILIAS
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Update
- ILIAS-eLearning e.V. ILIAS9.24, 10.12, 11.5 or later
Patches
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ILIAS-eLearning e.V. ILIAS | 9.0 ≤ v < 9.24, 10.0 ≤ v < 10.12, 11.0 ≤ v < 11.5 | 9.24, 10.12, 11.5 |
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