CVE-2026-77518

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-77518
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77518.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-77518
Aliases
  • GHSA-x65c-w438-c58f
Published
2026-09-21T20:36:26Z
Modified
2026-09-24T03:30:34Z
Severity
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CVSS Calculator
Summary
MaxKB: Known MCP tool IDs expose owner Tool.code and can be referenced by attacker workflows
Details

MaxKB is an open-source AI assistant for enterprise. In 2.10.2-lts and earlier, a normal workspace user who knows another user's active MCP tool_id in the same workspace can retrieve the hidden tool through the tool-detail route because it does not apply the per-resource authorization used by the list route. The response includes Tool.code, which may contain MCP server configuration and headers, and an attacker who can create or edit an attacker-owned workflow can place the same foreign mcp_tool_id in a workflow mcp-node so workflow debug uses the owner's MCP configuration without verifying permission to use that tool. No fixed version is available as of this review.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-862"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77518.json"
}
References

Affected packages

Git / github.com/1panel-dev/maxkb

Affected ranges

Type
GIT
Repo
https://github.com/1panel-dev/maxkb
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
6951bf3d126521a2ba959b2e3d623f2fe4d03bd6
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "last_affected":  "2.10.2-lts"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.9.0
v0.9.1
v1.*
v1.0.0
v1.0.1
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.10.0-lts
v1.10.1-lts
v1.10.2-lts
v1.10.3-lts
v1.10.4-lts
v1.2.0
v1.2.1
v1.3.0
v1.4.0
v1.5.0
v1.6.0
v1.6.1
v1.7.0
v1.9.0
v2.*
v2.0.0
v2.0.1
v2.0.2
v2.1.0
v2.10.0-lts
v2.10.2-lts
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.6.1
v2.7.0
v2.8.0
v2.8.1
v2.9.0
v2.9.1
v2.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77518.json"