CVE-2026-55236

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Source
https://cve.org/CVERecord?id=CVE-2026-55236
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55236.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55236
Aliases
Published
2026-09-14T15:51:17Z
Modified
2026-09-16T03:46:59Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
langgraph-api: Incomplete assistant authorization in LangGraph Server run creation
Details

langgraph-api implements the LangGraph API for rapid development and testing. Prior to 0.10.0, the langgraph-api run-creation path authorizes the assistant attached to a run by dispatching assistants.search with an incomplete value instead of the assistants.read event used by direct reads and cron creation. In deployments with custom resource handlers that register only assistants.read, omit an assistants.search handler, and have no global fallback handler, no applicable handler supplies an owner filter, allowing a low-privileged user to reference another user's private assistant through POST /runs or POST /threads/{thread_id}/runs. The run-creation response can disclose the private assistant's metadata, config, and context, and the run can execute using that assistant's configuration. Deployments without custom authorization handlers, or with an equivalent owner filter applied through a global handler or across all assistant events, are not affected. This issue is fixed in version 0.10.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55236.json"
}
References

Affected packages

Git / github.com/langchain-ai/helm

Affected ranges

Type
GIT
Repo
https://github.com/langchain-ai/helm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
bf062198cd5a9fe23a3e71c057a2103738ec3724
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.10.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

langgraph-cloud-0.*
langgraph-cloud-0.1.0
langgraph-cloud-0.1.1
langgraph-cloud-0.1.10
langgraph-cloud-0.1.11
langgraph-cloud-0.1.12
langgraph-cloud-0.1.2
langgraph-cloud-0.1.3
langgraph-cloud-0.1.4
langgraph-cloud-0.1.5
langgraph-cloud-0.1.6
langgraph-cloud-0.1.7
langgraph-cloud-0.1.8
langgraph-cloud-0.1.9
langgraph-dataplane-0.*
langgraph-dataplane-0.1.0
langgraph-dataplane-0.1.1
langgraph-dataplane-0.1.2
langgraph-dataplane-0.1.3
langgraph-dataplane-0.1.4
langgraph-dataplane-0.1.5
langgraph-dataplane-0.1.6
langgraph-dataplane-0.1.7
langgraph-operator-0.*
langgraph-operator-0.1.0
langgraph-operator-0.1.1
langgraph-operator-0.1.10
langgraph-operator-0.1.2
langgraph-operator-0.1.3
langgraph-operator-0.1.4
langgraph-operator-0.1.5
langgraph-operator-0.1.6
langgraph-operator-0.1.7
langgraph-operator-0.1.8
langgraph-operator-0.1.9
langsmith-0.*
langsmith-0.1.0
langsmith-0.1.1
langsmith-0.1.10
langsmith-0.1.11
langsmith-0.1.12
langsmith-0.1.13
langsmith-0.1.14
langsmith-0.1.15
langsmith-0.1.16
langsmith-0.1.2
langsmith-0.1.3
langsmith-0.1.4
langsmith-0.1.5
langsmith-0.1.6
langsmith-0.1.7
langsmith-0.1.8
langsmith-0.1.9
langsmith-0.2.0
langsmith-0.2.1
langsmith-0.2.10
langsmith-0.2.11
langsmith-0.2.2
langsmith-0.2.3
langsmith-0.2.4
langsmith-0.2.5
langsmith-0.2.6
langsmith-0.2.7
langsmith-0.2.8
langsmith-0.2.9
langsmith-0.3.1
langsmith-0.3.2
langsmith-0.3.3
langsmith-0.3.4
langsmith-0.3.5
langsmith-0.3.6
langsmith-0.3.7
langsmith-0.3.8
langsmith-0.3.9
langsmith-0.4.0
langsmith-0.4.1
langsmith-0.4.2
langsmith-0.4.3
langsmith-0.4.4
langsmith-0.4.5
langsmith-0.4.6
langsmith-0.4.7
langsmith-0.5.0
langsmith-0.5.1
langsmith-0.5.2
langsmith-0.5.3
langsmith-0.5.4
langsmith-0.6.1
langsmith-0.6.10
langsmith-0.6.11
langsmith-0.6.12
langsmith-0.6.13
langsmith-0.6.14
langsmith-0.6.15
langsmith-0.6.16
langsmith-0.6.17
langsmith-0.6.18
langsmith-0.6.19
langsmith-0.6.2
langsmith-0.6.20
langsmith-0.6.21
langsmith-0.6.22
langsmith-0.6.23
langsmith-0.6.24
langsmith-0.6.3
langsmith-0.6.4
langsmith-0.6.5
langsmith-0.6.6
langsmith-0.6.7
langsmith-0.6.8
langsmith-0.6.9
langsmith-0.7.0
langsmith-0.7.1
langsmith-0.7.10
langsmith-0.7.11
langsmith-0.7.2
langsmith-0.7.3
langsmith-0.7.4
langsmith-0.7.5
langsmith-0.7.6
langsmith-0.7.7
langsmith-0.7.8
langsmith-0.7.9
langsmith-0.8.0
langsmith-0.8.1
langsmith-0.8.10
langsmith-0.8.11
langsmith-0.8.12
langsmith-0.8.13
langsmith-0.8.14
langsmith-0.8.15
langsmith-0.8.16
langsmith-0.8.17
langsmith-0.8.18
langsmith-0.8.19
langsmith-0.8.2
langsmith-0.8.20
langsmith-0.8.21
langsmith-0.8.22
langsmith-0.8.23
langsmith-0.8.24
langsmith-0.8.25
langsmith-0.8.26
langsmith-0.8.27
langsmith-0.8.28
langsmith-0.8.3
langsmith-0.8.4
langsmith-0.8.5
langsmith-0.8.6
langsmith-0.8.7
langsmith-0.8.8
langsmith-0.8.9
langsmith-0.9.0
langsmith-0.9.1
langsmith-0.9.10
langsmith-0.9.11
langsmith-0.9.12
langsmith-0.9.13
langsmith-0.9.14
langsmith-0.9.15
langsmith-0.9.16
langsmith-0.9.17
langsmith-0.9.18
langsmith-0.9.19
langsmith-0.9.2
langsmith-0.9.20
langsmith-0.9.21
langsmith-0.9.22
langsmith-0.9.23
langsmith-0.9.24
langsmith-0.9.25
langsmith-0.9.26
langsmith-0.9.27
langsmith-0.9.28
langsmith-0.9.29
langsmith-0.9.3
langsmith-0.9.30
langsmith-0.9.31
langsmith-0.9.32
langsmith-0.9.33
langsmith-0.9.34
langsmith-0.9.35
langsmith-0.9.36
langsmith-0.9.37
langsmith-0.9.39
langsmith-0.9.4
langsmith-0.9.5
langsmith-0.9.6
langsmith-0.9.7
langsmith-0.9.8
langsmith-0.9.9
open-gpts-0.*
open-gpts-0.1.0
open-gpts-0.1.1
open-gpts-0.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55236.json"