Vulnerability · Published Oct 14, 2026 · Assigned by VulnCheck
CVE-2026-110761ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import
High 8.8
In plain English
A high-severity unsafe deserialization in ILIAS from ILIAS-eLearning e.V.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ILIAS-eLearning e.V. | ILIAS | 9.0 – before 9.2410.0 – before 10.1211.0 – before 11.5 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://docu.ilias.de/go/blog/15821/952 vendor-advisory
- https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=228077&ref_id=35 release-notes
- https://github.com/ILIAS-eLearning/ILIAS/commit/cf4e9c230edfd96fc94a1b1d355500aa8c6f1771 patch
- https://github.com/ILIAS-eLearning/ILIAS/commit/267d4645ea940f8f97d1a9838deff6a12097564d patch
- https://github.com/ILIAS-eLearning/ILIAS/commit/ac4684239641fb3dab2d636b53a61c46462d1208 patch
- https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilObjTest.php#L7364 technical-description
- https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilTestResultsImportParser.php#L225 technical-description
- https://github.com/ILIAS-eLearning/ILIAS product
- VulnCheck Advisory: ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import third-party-advisory