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TI-2026-74420 Aliases CVE-2026-110761

PHP object injection in ILIAS test results import

Priority MEDIUM 40CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

ILIAS from 9.0 before 9.24, from 10.0 before 10.12, and from 11.0 before 11.5 contains a PHP object injection flaw (CWE-502) in test results import. An authenticated user with test creation or import permission can supply a crafted test archive whose tst_sequence attribute is passed to unserialize(), allowing arbitrary object deserialization. By abusing Guzzle or Monolog gadget chains, an attacker can write PHP files and execute code.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0057 47th percentileScored 2026-11-07
Fix Fixed ILIAS (ILIAS-eLearning e.V.): 9.24, 10.12, 11.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ILIAS-eLearning e.V.ILIAS9.0 to before 9.24; 10.0 to before 10.12; 11.0 to before 11.59.24, 10.12, 11.5Patch availableCNA
  • ILIAS VendorILIAS-eLearning e.V. Affected 9.0 to before 9.24; 10.0 to before 10.12; 11.0 to before 11.5 Fixed in 9.24, 10.12, 11.5 Patch available CNA

Remediation

ILIAS 9.24, 10.12, and 11.5 fix the issue, so upgrade ILIAS 9.x to 9.24, 10.x to 10.12, and 11.x to 11.5.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA ILIAS (ILIAS-eLearning e.V.) Fixed in 9.24, 10.12, 11.5

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    ILIAS-eLearning e.V. ILIAS — ILIAS 11.5 Security Advisory (Mantis 0048413)

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-70090 Unrestricted file upload in ILIAS QTI import lets authors run codePriority MEDIUM 41
    • TI-2026-69589 Argument injection in ILIAS image map uploads enables code executionPriority MEDIUM 41
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-110761
  2. 2026-10-16 Priority changed: LOW → MEDIUM

References

Patch 3

Advisory 1

Other 4

  • TI-2026-55506 ILIAS PHP Object Injection via Shibboleth Logout CVSS 4.0CRITICAL 9.3
  • TI-2026-70090 Unrestricted file upload in ILIAS QTI import lets authors run code CVSS 4.0HIGH 8.7
  • TI-2026-69589 Argument injection in ILIAS image map uploads enables code execution CVSS 4.0HIGH 8.7
  • TI-2026-56895 ILIAS Arbitrary SQL Injection via Repository Trash Table Sort Parameter CVSS 4.0HIGH 8.7
  • TI-2026-57181 ILIAS Arbitrary File Read via SOAP addFile CVSS 4.0HIGH 7.1
  • TI-2026-59124 ILIAS before 9.23, 10.11, and 11.4 Missing Authorization in Group Object Action Methods CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences