CVE-2026-82280CWE-639

CVE-2026-82280

High · published August 29, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
15.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CVSS v4.0
7.1 · 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
EPSS
0.00251 · 15.5th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-08-29T00:20Z
References (5)
https://github.com/QuivrHQ/quivr · [email protected]https://github.com/QuivrHQ/quivr/blob/v0.0.322/backend/api/quivr_api/modules/prompt/controller/prompt_routes.py · [email protected]https://github.com/QuivrHQ/quivr/issues/3698 · [email protected]https://www.vulncheck.com/advisories/quivr-prompt-endpoints-missing-ownership-validation · [email protected]https://github.com/The-Vibe-Company/Quivr/issues/3698 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 28 AUG 16:19Z
    Quivr Prompt Endpoints Missing Ownership Validation
    cvelistv5