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TI-2026-83138 Aliases CVE-2026-119664GHSA-cqj4-h3hg-hjvc

Authorization bypass in Tamery lets Pro users write into other chat histories

Priority MEDIUM 57CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Tamery (formerly Conar) from 0.26.1 before 0.99.0 contains an authorization bypass in the cloud sync API handler chatsMessages.update. The handler leaves the client-supplied chatId writable, a flaw classified as CWE-639 (Authorization Bypass Through User-Controlled Key). Authenticated Pro subscribers who know another user's chat ID can move messages with arbitrary parts and metadata into the victim's AI chat history.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

Tamery (formerly Conar) 0.26.1 before 0.99.0 contains an authorization bypass vulnerability in the cloud sync API chatsMessages.update handler, which leaves the client-supplied chatId writable. Authenticated Pro subscribers who know another user's chat ID can move messages with arbitrary parts and metadata into the victim's AI chat history.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00295 22nd percentileScored 2026-11-07
Fix Fixed tamery (wannabespace): 0.99.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
wannabespacetamery0.26.1 to before 0.99.00.99.0Patch availableCNA
  • tamery Vendorwannabespace Affected 0.26.1 to before 0.99.0 Fixed in 0.99.0 Patch available CNA

Remediation

Update Tamery to version 0.99.0, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA tamery (wannabespace) Fixed in 0.99.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    wannabespace tamery 0.99.0

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-83137 Broken authorization in Tamery lets users alter others' connectionsPriority LOW 24
    Show all 2 records →

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-119664
  2. 2026-10-30 Alias added: GHSA-cqj4-h3hg-hjvc
  3. 2026-11-05 CISA SSVC decision points changed
  4. 2026-11-05 Priority changed: LOW → MEDIUM

References

Patch 1

Advisory 1

Other 3

  • TI-2026-83137 Broken authorization in Tamery lets users alter others' connections CVSS 4.0MEDIUM 5.3

Sources

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