CVE-2026-82271R2R Missing Ownership Check Allows Modifying Other Users' Conversations
Updated under an hour ago ()
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It affects SciPhi-AI R2R. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SciPhi-AI R2R sciphi_ai:r2r (from the name) | through 3.6.5 | CNA record |
References
- https://github.com/SciPhi-AI/R2R/issues/2292issue-tracking
- https://github.com/SciPhi-AI/R2Rproduct
- https://github.com/SciPhi-AI/R2R/blob/9c5a94d151f90876bd7eb860f300a8fd662dc481/py/core/main/api/v3/conversations_router.pytechnical-description
- https://www.vulncheck.com/advisories/r2r-missing-ownership-check-allows-modifying-other-users-conversationsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.