CVE-2026-82280

Quivr Prompt Endpoints Missing Ownership Validation

Published Aug 28, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Description
Quivr through 0.0.322 fails to validate ownership in prompt endpoints, allowing authenticated users to modify any prompt by identifier. Attackers with read-only access to shared brains can read exposed prompt identifiers and overwrite system prompts affecting all brain users.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
References
Metrics ssvc

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

Type Values Removed Values Added
Description Quivr through 0.0.322 fails to validate ownership in prompt endpoints, allowing authenticated users to modify any prompt by identifier. Attackers with read-only access to shared brains can read exposed prompt identifiers and overwrite system prompts affecting all brain users.
Title Quivr Prompt Endpoints Missing Ownership Validation
First Time appeared Quivr
Quivr quivr
Weaknesses CWE-639
CPEs cpe:2.3:a:quivr:quivr:*:*:*:*:*:*:*:*
Vendors & Products Quivr
Quivr quivr
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N'}

cvssV4_0

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 24, 2026, 2:20 PM
Reserved
Aug 28, 2026, 11:12 AM
Status
Deferred
Published
Aug 28, 2026, 8:20 PM
Modified
Sep 23, 2026, 5:17 PM