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CVE-2026-82280

Quivr Prompt Endpoints Missing Ownership Validation

CVSS 4.0 7.1 HIGHCVSS 3.1 7.1 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-82280

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82280

Published

quivr

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "QuivrHQ",
                    "product": "quivr",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "0.0.322",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON