CVE-2026-77521MaxKB: Prompt-injectable agent can lead to command execution
Updated under an hour ago ()
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It affects 1Panel-dev MaxKB. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.5-lts, assistants with a tool, MCP tool, skill, or sub-application use SandboxShellBackend, which exposes an execute shell tool without excluding it and omits execute from interrupt_on, so human approval is not required. Untrusted chat or ingested content can therefore cause command execution; source deployments with MAXKB_SANDBOX disabled run commands directly as the application user, while the official root container's string-based gosu wrapper allowed shell metacharacters to execute outside the intended sandbox. This issue is fixed in version 2.10.5-lts.
- CVSS
- 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-78, CWE-250, CWE-749
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
1Panel-dev MaxKB 1panel_dev:maxkb (from the name) | before 2.10.5-lts | CNA record |
References
- https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f36j-f34j-h3rxx-refsource-confirm
- https://github.com/1Panel-dev/MaxKB/commit/594f50f2ea80a502d1c955371ba0438b277c30eax-refsource-misc
- https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.5-ltsx-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.