Skip to main content
cvebuzz

CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

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 trust the spoofed response as the genuine tool result. This issue has been fixed in version 2.8.0.

CVSS 3.1 · LowBuzz score 18.9

Buzz score

Why this CVE is surfacing

Buzz score total 18.9

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 13.9 · diversity 5.0 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
13.9
3 evidence mentions in the snapshot
Diversity score
5.0
1 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
3 source links · newest first

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-28900

    A file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A maliciously crafted ZIP archive may bypass Gatek…

    CVSS 5.5 · Medium
    2 mentions
  • CVE-2026-28849

    The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A maliciously crafted ZIP archive may bypass Gatekeeper checks.

    CVSS 5.5 · Medium
    2 mentions
  • CVE-2026-39421

    MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a sandbox escape vulnerability in the ToolExecutor component. By leveraging Python's ctypes l…

    CVSS 6.3 · Medium
    3 mentions
  • CVE-2026-39420

    MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, an incomplete sandbox protection mechanism allows an authenticated user with tool execution privi…

    CVSS 6.3 · Medium
    3 mentions
  • CVE-2025-4546

    A vulnerability was found in 1Panel-dev MaxKB up to 1.10.7. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Knowledge…

    CVSS 5.1 · Medium
  • CVE-2026-18085

    An Improper Input Validation in the BlackBerry UEM Management Console of BlackBerry UEM 12.23.0 QF8 and earlier allows Arbitrary File Download and Potential Denial of Service.

    CVSS 5.9 · Medium
    1 mention