CVE-2026-54149
Authenticated RCE via crafted .tool import in MaxKB (<2.10.0-lts).
Is CVE-2026-54149 being exploited?
Not confirmed. CVE-2026-54149 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.55% probability of exploitation in the next 30 days.
How severe is CVE-2026-54149?
CVE-2026-54149 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-54149?
Yes. A fix has been recorded for CVE-2026-54149. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54149 affect?
CVE-2026-54149 affects MaxKB < 2.10.0-lts, apps/tools/serializers/tool.py, apps/application/chat_pipeline/step/chat_step/impl/base_chat_step.py, MultiServerMCPClient. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54149?
Upgrade to MaxKB 2.10.0-lts; block untrusted .tool imports; restrict upload privileges.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can execute arbitrary system commands on the host by importing a malicious .tool using stdio transport via an AI Chat node (remote code execution).
Immediate action required
- affected< 2.10.0-lts
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.