PT-2026-26483 · Node.Js · Keystone

N0Wsh · Published 2026-03-19 · Updated 2026-05-04 · CVE-2026-33326

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Keystone versions prior to 6.5.2

Description Keystone is a content management system for Node.js. An access control bypass exists in findMany queries through the cursor parameter. Specifically, the {field}.isFilterable access control can be circumvented, potentially allowing confirmation of the existence of records with protected field values. The fix for a related issue (CVE-2025-46720) addressed the where parameter in update and delete mutations but did not include the cursor parameter in findMany. This allows bypassing isFilterable access control using a function. The issue impacts projects relying on isFilterable behavior to prevent external users from using filtering as a discovery mechanism. The API endpoint affected is findMany. The vulnerable parameter is cursor.

Recommendations Update to Keystone version 6.5.2 or later. As a workaround, set {field}.isFilterable: false statically for relevant fields. As a workaround, set {field}.graphql.omit.read: true for relevant fields.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-33326

GHSA-CGCG-Q9JH-5PR2

Affected Products

Keystone

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33326.json · Exploit
• https://github.com/keystonejs/keystone/security/advisories/GHSA-cgcg-q9jh-5pr2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33326 · Security Note
• https://osv.dev/vulnerability/GHSA-cgcg-q9jh-5pr2 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-33326 · Vendor Advisory
• https://github.com/keystonejs/keystone · Note
• https://t.me/cveNotify/162035 · Telegram Post