---
id: CVE-2026-110761
title: >-
  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
summary: >-
  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 m…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:17:31.543'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110761'
references:
  - url: 'https://docu.ilias.de/go/blog/15821/952'
    label: disclosure@vulncheck.com
  - url: >-
      https://docu.ilias.de/ilias.php?baseClass=illmpresentationgui&obj_id=228077&ref_id=35
    label: disclosure@vulncheck.com
  - url: 'https://github.com/ILIAS-eLearning/ILIAS'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilObjTest.php#L7364
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/blob/2a3758ee3b01e5c66922e08f58a2189146b884d4/components/ILIAS/Test/classes/class.ilTestResultsImportParser.php#L225
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/commit/267d4645ea940f8f97d1a9838deff6a12097564d
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/commit/ac4684239641fb3dab2d636b53a61c46462d1208
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ILIAS-eLearning/ILIAS/commit/cf4e9c230edfd96fc94a1b1d355500aa8c6f1771
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-php-object-injection-via-test-results-import
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-14T19:49:57.608Z'
vendor: ILIAS-eLearning e.V.
product: ILIAS
affected:
  - ILIAS >= 9.0 < 9.24
  - ILIAS >= 10.0 < 10.12
  - ILIAS >= 11.0 < 11.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-14T19:39:39.482386Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.