Auth bypass in Parse-Community Parse-Server
CVE-2026-109302
Parse Server 8.2.2 before 8.6.94 and 9.0.0 before 9.10.1-alpha.14 applies its GraphQL introspection control only to operation text sent directly with a request, not to operations resolved from Apollo Server's automatic persisted query cache. Unauthenticated attackers holding the public Application Id and client key can replay an introspection query previously cached by a master or maintenance key client to retrieve the schema, including private class and field names.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/parse-community/parse-server/security/advisories/GHSA-gxxq-pghq-9vrc (vendor-advisory)
- www.vulncheck.com/advisories/parse-server-8.2.2-before-8.6.94-and-9.0.0-before-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109302?
- CVE-2026-109302 is a low-severity vulnerability in Parse-Community Parse-Server, classified under Incorrect Authorization. CVSS score: 3.7/10. Published 2026-10-12.
- How severe is CVE-2026-109302?
- Low severity. CVSS v3 base score is 3.7 out of 10.