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TI-2026-55287 Aliases CVE-2026-79917

MaxKB: Chat share-link endpoint missing owner check: a chat token can publish another user's conversation

Priority LOW 28CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.

Summary

MaxKB is an open-source AI assistant for enterprise. In 2.7.0 through 2.10.4-lts, POST /chat/api/{application_id}/chat/{chat_id}/share_chat verifies that a conversation exists but does not verify that it belongs to the authenticated chat_user_id or to the application bound to the caller's token. An attacker with any chat token and a known victim chat_id can create an unauthenticated public ChatShareLink exposing the victim's conversation and can create PublicFileAccess state that makes associated files retrievable without credentials, with no available revoke path. No fixed version is available as of this review.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00268 19th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
1Panel-devMaxKB2.7.0 – 2.10.4-lts—No fix listedCNA
  • MaxKB Vendor1Panel-dev Affected 2.7.0 – 2.10.4-lts Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:maxkb:maxkb:*:*:*:*:*:*:*:*——Maxkb
  • cpe:2.3:a:maxkb:maxkb:*:*:*:*:*:*:*:* Versions — — ·Maxkb

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-79917

References

Other 1

  • TI-2023-08712 KubePi's Hardcoded Jwtsigkeys allows malicious actor to login with a forged JWT token CVSS 3.1CRITICAL 9.8
  • TI-2023-08729 KubeOperator is vulnerable to unauthorized access to system API CVSS 3.1CRITICAL 9.8
  • TI-2026-54047 MaxKB: Prompt-injectable agent can lead to command execution CVSS 3.1CRITICAL 10.0
  • TI-2025-43180 CordysCRM 1.4.1 is vulnerable to SQL Injection in the employee list query interface… CVSS 3.1CRITICAL 9.8
  • TI-2024-27040 Arbitrary File Read in Ansible Playbooks in Jumpserver CVSS 3.1CRITICAL 10.0
  • TI-2024-26801 a sqlinjection in 1Panel CVSS 3.1CRITICAL 9.8
See all 145 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences