CVE-2026-110761highCWE-502

CVE-2026-110761: high-severity vulnerability in ILIAS-eLearning e.V. ILIAS

ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import

Published

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.6%
exploitation probability
0.6%top 54% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
ILIAS-eLearning e.V. · ILIAS
Related CVEs — ILIAS-eLearning e.V. ILIAS

In the same product, most dangerous first.

CVE-2026-80428CRITICALILIAS PHP Object Injection via Shibboleth LogoutEPSS 4.7%CVE-2026-107639HIGHILIAS before 9.24, 10.12, and 11.5 Argument Injection via Image Map Question Upload FilenameEPSS 0.7%CVE-2026-82538HIGHILIAS Arbitrary SQL Injection via Repository Trash Table Sort ParameterEPSS 0.7%CVE-2026-108113HIGHILIAS before 9.24, 10.12, and 11.5 Unrestricted File Upload via QTI ImportEPSS 0.6%CVE-2026-82877HIGHILIAS Arbitrary File Read via SOAP addFileEPSS 0.5%CVE-2026-86416MEDIUMILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action MethodsEPSS 0.4%
References
https://docu.ilias.de/go/blog/15821/952https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=228077&ref_id=35https://github.com/ILIAS-eLearning/ILIAShttps://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilObjTest.php#L7364https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilTestResultsImportParser.php#L225https://github.com/ILIAS-eLearning/ILIAS/commit/267d4645ea940f8f97d1a9838deff6a12097564dhttps://github.com/ILIAS-eLearning/ILIAS/commit/ac4684239641fb3dab2d636b53a61c46462d1208https://github.com/ILIAS-eLearning/ILIAS/commit/cf4e9c230edfd96fc94a1b1d355500aa8c6f1771https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-php-object-injection-via-test-results-import