What is CVE-2026-82280?

CVE-2026-82280 is a high-severity vulnerability in Quivrhq Quivr, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-08-28.

How severe is CVE-2026-82280?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Quivrhq Quivr

CVE-2026-82280

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.

Affected products

Quivrhq Quivr

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-82280?: CVE-2026-82280 is a high-severity vulnerability in Quivrhq Quivr, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-08-28.
How severe is CVE-2026-82280?: High severity. CVSS v3 base score is 7.1 out of 10.