CVE-2026-39419

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Source
https://cve.org/CVERecord?id=CVE-2026-39419
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39419.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-39419
Aliases
  • GHSA-f3c8-p474-xwfv
Published
2026-04-14T01:03:40.653Z
Modified
2026-07-08T08:05:08.238124552Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
MaxKB: Sandbox Result Validation Bypass via Tool Output Spoofing
Details

MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, an authenticated user can bypass sandbox result validation and spoof tool execution results by exploiting Python frame introspection to read the wrapper's UUID from its bytecode constants, then writing a forged result directly to file descriptor 1 (bypassing stdout redirection). By calling sys.exit(0), the attacker terminates the wrapper before it prints the legitimate output, causing the MaxKB service to parse and trust the spoofed response as the genuine tool result. This issue has been fixed in version 2.8.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-290",
        "CWE-693",
        "CWE-74"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39419.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
Fixed
f0a73da5d9ee22e6374dabd4da1081569659530c
Fixed
38c4cfecd065293ede0437f6fa76cf0116591d25
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.8.0"
        }
    ],
    "cpe": "cpe:2.3:a:maxkb:maxkb:*:*:*:*:-:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

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
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.6.1
v2.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39419.json"