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CVE-2026-46491— SimpleSAMLphp casserver FileSystemTicketStore path traversal allows out-of-ticket-directory read/unserialize and conditional deletion

Quick assessment

Affected
simplesamlphp simplesamlphp-module-casserver
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SimpleSAMLphp-casserver是SimpleSAMLphp开源的一款CAS协议兼容的单点登录服务器模块。 SimpleSAMLphp-casserver 7.0.3之前版本存在路径遍历漏洞，该漏洞源于文件路径构建时直接拼接攻击者控制的票据标识符，可能导致路径遍历和反序列化攻击。

CVSS 8.6 · High EPSS 0.62% · P48

Affected Version Matrix 1

VendorProduct Version RangeStatus
simplesamlphp simplesamlphp-module-casserver < 7.0.3 affected
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I. Basic Information for CVE-2026-46491

Vulnerability Information
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Vulnerability Title
SimpleSAMLphp casserver FileSystemTicketStore path traversal allows out-of-ticket-directory read/unserialize and conditional deletion
Source: CVE Program / CVE List V5
Vulnerability Description
SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controlled ticket identifier. Public CAS validation/proxy endpoints pass attacker-controlled ticket / pgt query parameters into this store. In deployments using FileSystemTicketStore, a remote attacker can use path traversal sequences such as ../target.serialized to make the CAS server read and unserialize files outside the ticket directory. In the CAS 1.0 validation flow, the same attacker-selected path is also passed to deleteTicket() immediately after getTicket() returns, which can delete the target file when it is readable by the PHP process, deletable under the PHP process filesystem permissions, and unserializes to a value compatible with the ?array return type. This issue has been patched in version 7.0.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
SimpleSAMLphp-casserver 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SimpleSAMLphp-casserver是SimpleSAMLphp开源的一款CAS协议兼容的单点登录服务器模块。 SimpleSAMLphp-casserver 7.0.3之前版本存在路径遍历漏洞，该漏洞源于文件路径构建时直接拼接攻击者控制的票据标识符，可能导致路径遍历和反序列化攻击。
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
simplesamlphp simplesamlphp-module-casserver < 7.0.3 -

II. Public POCs for CVE-2026-46491

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8178 chars
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III. Intelligence Information for CVE-2026-46491

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Patches & Fixes for CVE-2026-46491 (1)

Vendor Advisories for CVE-2026-46491 (1)

Vendor Pages for CVE-2026-46491 (1)

IV. Related Vulnerabilities

Same product: simplesamlphp-module-casserver
Same vendor: simplesamlphp
Same weakness: CWE-22

V. Comments for CVE-2026-46491

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