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CVE-2026-39419

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5f4952b1ca6fdb0ff37931818989921084cfd3567a74f21ba02a8932b3d8c1d9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-290","description":"CWE-290: Authentication Bypass by Spoofing","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-74","description":"CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"MaxKB","vendor":"1Panel-dev","versions":[{"status":"affected","version":"< 2.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-290","description":"CWE-290: Authentication Bypass by Spoofing","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-74","description":"CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/1Panel-dev/MaxKB/commit/38c4cfecd065293ede0437f6fa76cf0116591d25","tags":["x_refsource_MISC"],"url":"https://github.com/1Panel-dev/MaxKB/commit/38c4cfecd065293ede0437f6fa76cf0116591d25"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/references/1
{"name":"https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0","tags":["x_refsource_MISC"],"url":"https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/references/2
{"name":"https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f3c8-p474-xwfv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f3c8-p474-xwfv"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7212f777ba77bc29151202fe55881e3fb83d085f05dd1e41b4cba4b09aee5302 · sha256:3848fbf384ea532f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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