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CVE-2026-80428— ILIAS PHP Object Injection via Shibboleth Logout

Quick assessment

Affected
ILIAS-eLearning e.V. ILIAS
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ILIAS e-Learning ILIAS是ILIAS e-Learning组织的一套在线学习管理平台。 ILIAS e-Learning ILIAS 9.22之前版本、10.0至10.10之前版本和11.0至11.3之前版本存在反序列化注入漏洞，该漏洞源于components/ILIAS/AuthShibboleth/resources/shib_logout.php端点对会话数据的不安全反序列化，未限制可构造的类，导致未经身份验证的攻击者可注入序列化对象，在对象销毁时向Web根目录下任意路径写入攻击

CVSS 9.8 · Critical EPSS 4.67% · P92

Public Exploits 1

ExploitDB · 1 EDB-52682 [remote]

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProduct Version RangeStatus
ILIAS-eLearning e.V. ILIAS 9.0< 9.22 affected
10.0< 10.10 affected
11.0< 11.3 affected
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I. Basic Information for CVE-2026-80428

Vulnerability Information
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Vulnerability Title
ILIAS PHP Object Injection via Shibboleth Logout
Source: CVE Program / CVE List V5
Vulnerability Description
ILIAS before versions 9.22, 10.10, and 11.3 contains an unauthenticated PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting serialized objects through the LTI authentication endpoint and triggering deserialization via the Shibboleth back-channel logout endpoint. Attackers can write arbitrary serialized objects into session storage, then exploit an available POP gadget through the logout endpoint's unrestricted deserialization to write attacker-controlled PHP content to a web-accessible path and achieve remote code execution as the web server user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
ILIAS e-Learning ILIAS 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ILIAS e-Learning ILIAS是ILIAS e-Learning组织的一套在线学习管理平台。 ILIAS e-Learning ILIAS 9.22之前版本、10.0至10.10之前版本和11.0至11.3之前版本存在反序列化注入漏洞，该漏洞源于components/ILIAS/AuthShibboleth/resources/shib_logout.php端点对会话数据的不安全反序列化，未限制可构造的类，导致未经身份验证的攻击者可注入序列化对象，在对象销毁时向Web根目录下任意路径写入攻击
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ILIAS-eLearning e.V. ILIAS 9.0 ~ 9.22 -

II. Public POCs for CVE-2026-80428

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III. Intelligence Information for CVE-2026-80428

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Patches & Fixes for CVE-2026-80428 (1)

Vendor Advisories for CVE-2026-80428 (2)

Security Blog Posts for CVE-2026-80428 (3)

Vendor Pages for CVE-2026-80428 (3)

IV. Related Vulnerabilities

Same product: ILIAS
Same vendor: ILIAS-eLearning e.V.
Same weakness: CWE-502

V. Comments for CVE-2026-80428

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