Read the docs
TI-2026-56736 Aliases CVE-2026-82271GHSA-w8h6-f7c2-3rhj

R2R Missing Ownership Check Allows Modifying Other Users' Conversations

Priority HIGH 66CWE-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 · High · None
Fix status
No fix listed

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

Summary

R2R through 3.6.5 fails to properly validate user ownership in conversation update and message handlers, allowing authenticated users to modify other users' conversations. Attackers can supply arbitrary conversation identifiers to rename conversations and append messages to other users' conversation histories, corrupting state and injecting malicious content.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00389 33rd 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
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
SciPhi-AIR2Rup to 3.6.5—No fix listedCNA
  • R2R VendorSciPhi-AI Affected up to 3.6.5 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82271
  2. 2026-10-03 Alias added: GHSA-w8h6-f7c2-3rhj

References

Other 3

  • TI-2026-56888 R2R 3.6.6 SQL Injection via Vector Index Creation Endpoint CVSS 4.0CRITICAL 9.3
  • TI-2026-56889 R2R 3.6.6 SQL Injection via Retrieval Search Filter Key CVSS 4.0HIGH 8.7
  • TI-2026-67536 SciPhi-AI R2R Retrieval Completion API Endpoint llm.py server-side request forgery CVSS 4.0MEDIUM 6.9
  • TI-2026-67535 SciPhi-AI R2R JWT Secret hard-coded credentials CVSS 4.0MEDIUM 6.9

Sources

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