CVE-2026-9096: Github.com/casdoor/casdoor Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-rgq2-93gj-ffxg
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CVSS 7.5
CWE-613
Published
Advisory Summary

CVE-2026-9096 is a HIGH (CVSS 7.5) remote code execution vulnerability (CWE-613: Insufficient Session Expiration) affecting Github.com/casdoor/casdoor libraries in the Go ecosystem. The issue involves casdoor doesn't enforce saml assertion time bounds. Remediation is available in the latest vendor maintenance releases.

CVE-2026-9096 at a Glance

CVE Identifier CVE-2026-9096
GHSA Identifier GHSA-rgq2-93gj-ffxg
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-613: Insufficient Session Expiration
Affected Product Github.com/casdoor/casdoor
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-9096

To remediate this vulnerability, upgrade all affected Github.com/casdoor/casdoor dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/casdoor/casdoor fixed: Latest secure release 
Upgrade github.com/casdoor/casdoor to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/casdoor/casdoor

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-9096, inspect your project dependencies for Github.com/casdoor/casdoor:

inspect dependencies for github.com/casdoor/casdoor

Analyze the terminal output to locate any version of Github.com/casdoor/casdoor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-613: Insufficient Session Expiration, where according to wasc, "insufficient session expiration is when a web site permits an attacker to reuse old session credentials or session ids for authorization.". In Github.com/casdoor/casdoor, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Casdoor versions 2.362.0 and earlier do not enforce SAML assertion time bounds. The gosaml2 library reports all time-validation results, including NotOnOrAfter and NotBefore, in the assertionInfo.WarningInfo field. However, ParseSamlResponse() never reads this field, meaning that time bounds are computed by the library but silently discarded before the user session is issued.

CVE-2026-9096 Affected Github.com/casdoor/casdoor Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github.com/casdoor/casdoor
golang/github.com/casdoor/casdoor
Go
≤ 1.1000.1-0.20260321120606-239e8bd69487

References

NVD — CVE-2026-9096 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9096
Github.com/casdoor/casdoor Source Repository REPOSITORY
https://github.com/casdoor/casdoor
kb.cert.org/vuls/id/780781 WEB
https://kb.cert.org/vuls/id/780781

Frequently Asked Questions

What is CVE-2026-9096?
CVE-2026-9096 is a security vulnerability in Github.com/casdoor/casdoor involving Casdoor doesn't enforce SAML assertion time bounds under CWE-613: Insufficient Session Expiration.
Which Github.com/casdoor/casdoor versions are affected?
Affected versions include releases prior to current release patches across affected packages: github.com/casdoor/casdoor.
What version fixes CVE-2026-9096?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/casdoor/casdoor affected?
Yes, github.com/casdoor/casdoor is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-9096?
CVE-2026-9096 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-9096?
CVE-2026-9096 is classified under CWE-613: Insufficient Session Expiration (According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.").
How can I check Go dependencies for CVE-2026-9096?
Run the dependency tree command: 'inspect dependencies for github.com/casdoor/casdoor'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rgq2-93gj-ffxg",
  "modified" : "2026-07-02T18:37:47Z",
  "published" : "2026-05-28T18:30:32Z",
  "aliases" : [ "CVE-2026-9096" ],
  "summary" : "Casdoor doesn't enforce SAML assertion time bounds",
  "details" : "Casdoor versions 2.362.0 and earlier do not enforce SAML assertion time bounds. The gosaml2 library reports all time-validation results, including NotOnOrAfter and NotBefore, in the assertionInfo.WarningInfo field. However, ParseSamlResponse() never reads this field, meaning that time bounds are computed by the library but silently discarded before the user session is issued.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/casdoor/casdoor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.1000.1-0.20260321120606-239e8bd69487"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-9096"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/casdoor/casdoor"
  }, {
    "type" : "WEB",
    "url" : "https://kb.cert.org/vuls/id/780781"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-613" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-02T18:37:47Z",
    "nvd_published_at" : "2026-05-28T17:16:34Z"
  }
}