CVE-2026-85135Network attack vector

Authenticated code execution via unsafe archive extraction

Published Sep 3, 2026 · Updated Sep 3, 2026

Unrestricted upload in ILIAS 9.0 through 9.21, 10.0 through 10.9, and 11.0 through 11.2 allows remote authenticated users to execute code. ZipAdapter extracts subtitle ZIP entries directly beside the uploaded archive without rejecting unsafe paths or restricting file extensions. MediaPool upload access is required; a crafted archive can place server-executable content and compromise the application host.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Unrestricted upload in ILIAS 9.0 through 9.21, 10.0 through 10.9, and 11.0 through 11.2 allows remote authenticated users to execute code. ZipAdapter extracts subtitle ZIP entries directly beside the uploaded archive without rejecting unsafe paths or restricting file extensions. MediaPool upload access is required; a crafted archive can place server-executable content and compromise the application host.

The record

CVE
CVE-2026-85135
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
ILIAS open source e-Learning e.V.
Product
ILIAS
Classifications
CWE-434, CWE-284, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0
  2. Affected versionversion=10.1
  3. Affected versionversion=10.2
  4. Affected versionversion=10.3
  5. Affected versionversion=10.4
  6. Affected versionversion=10.5
  7. Affected versionversion=10.6
  8. Affected versionversion=10.7
  9. Affected versionversion=10.8
  10. Affected versionversion=10.9
  11. Affected versionversion=11.0
  12. Affected versionversion=11.1
  13. Affected versionversion=11.2
  14. Affected versionversion=9.0
  15. Affected versionversion=9.1
  16. Affected versionversion=9.10
  17. Affected versionversion=9.11
  18. Affected versionversion=9.12
  19. Affected versionversion=9.13
  20. Affected versionversion=9.14
  21. Affected versionversion=9.15
  22. Affected versionversion=9.16
  23. Affected versionversion=9.17
  24. Affected versionversion=9.18
  25. Affected versionversion=9.19
  26. Affected versionversion=9.2
  27. Affected versionversion=9.20
  28. Affected versionversion=9.21
  29. Affected versionversion=9.3
  30. Affected versionversion=9.4
  31. Affected versionversion=9.5
  32. Affected versionversion=9.6
  33. Affected versionversion=9.7
  34. Affected versionversion=9.8
  35. Affected versionversion=9.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ILIAS open source e-Learning e.V. · ILIASversion=10.0; version=10.1; version=10.2; version=10.3; version=10.4; version=10.5; version=10.6; version=10.7; version=10.8; version=10.9; version=11.0; version=11.1; version=11.2; version=9.0; version=9.1; version=9.10; version=9.11; version=9.12; version=9.13; version=9.14; version=9.15; version=9.16; version=9.17; version=9.18; version=9.19; version=9.2; version=9.20; version=9.21; version=9.3; version=9.4; version=9.5; version=9.6; version=9.7; version=9.8; version=9.9

Published CVSS scores

6.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDB CNAAV:N/AC:L/Au:S/C:P/I:P/A:P
5.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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