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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 31 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 31 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Sciphi-ai
Sciphi-ai r2r
Vendors & Products Sciphi-ai
Sciphi-ai r2r

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description 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.
Title R2R Missing Ownership Check Allows Modifying Other Users' Conversations
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-31T19:07:38.620Z

Reserved: 2026-08-28T11:12:38.809Z

Link: CVE-2026-82271

cve-icon Vulnrichment

Updated: 2026-08-31T19:07:32.356Z

cve-icon NVD

Status : Received

Published: 2026-08-28T20:20:17.950

Modified: 2026-08-31T20:17:13.073

Link: CVE-2026-82271

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T11:20:36Z

Weaknesses