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CVE-2026-82280

Quivr Prompt Endpoints Missing Ownership Validation

HIGH
7.1
CVSS Score
Published: August 28, 2026 at 04:19 PM UTC
Updated: September 23, 2026 at 05:30 PM UTC
2 products affected across 2 vendorsQuivrQuivr

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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Quivr· Quivr
95%
v ≤ 0.0.322
Quivr· Quivrhq
60%
v ≤ 0.0.322

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Issue Tracking
Source: cverecord
https://github.com/QuivrHQ/quivr/issues/3698
Product
Source: cverecord
https://github.com/QuivrHQ/quivr
Technical Description
Source: cverecord
https://github.com/QuivrHQ/quivr/blob/v0.0.322/backend/api/quivr_api/modules/prompt/controller/prompt_routes.py
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/quivr-prompt-endpoints-missing-ownership-validation
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/The-Vibe-Company/Quivr/issues/3698

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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