CVE-2026-110761CWE-502insecure-deserialization

CVE-2026-110761

High · published October 14, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
46.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00570 · 46.5th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-10-14T23:17Z
References (9)
https://docu.ilias.de/go/blog/15821/952 · [email protected]https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=228077&ref_id=35 · [email protected]https://github.com/ILIAS-eLearning/ILIAS · [email protected]https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilObjTest.php#L7364 · [email protected]https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilTestResultsImportParser.php#L225 · [email protected]https://github.com/ILIAS-eLearning/ILIAS/commit/267d4645ea940f8f97d1a9838deff6a12097564d · [email protected]https://github.com/ILIAS-eLearning/ILIAS/commit/ac4684239641fb3dab2d636b53a61c46462d1208 · [email protected]https://github.com/ILIAS-eLearning/ILIAS/commit/cf4e9c230edfd96fc94a1b1d355500aa8c6f1771 · [email protected]https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-php-object-injection-via-test-results-import · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 14 OCT 18:47Z
    ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import
    cvelistv5
  • 14 OCT 18:47Z
    ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import
    cvelistv5