What’s Vulnerable › Vulnerabilities

CVE-2026-116164: Parse Server 9.0.0 before 9.10.4-alpha.3 Reserved Field Name Injection via Object Writes

• Severity: medium (CVSS 6.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-25 · updated 2026-10-26
• Weakness: CWE-20

Description

Parse Server before 8.6.100 and 9.0.0 before 9.10.4-alpha.3 does not reject reserved internal field names in client object writes, allowing clients to store or clear internal fields. Attackers can write a reserved field that makes reads of an object fail on MongoDB, disrupting queries on that class for all users, or clear their own account lockout state and password history to bypass lockout and password policies.

Affected products

• parse-community parse-server: from 9.0.0 before 9.10.4-alpha.3; before 8.6.100 — fixed in 8.6.100, 9.10.4-alpha.3

How to fix

Upgrade to a fixed version: parse-community parse-server 8.6.100, 9.10.4-alpha.3. Check the vendor advisory for mitigations.

References

• https://github.com/parse-community/parse-server/security/advisories/GHSA-gwrq-q25v-g8mr
• https://www.vulncheck.com/advisories/parse-server-9.0.0-before-9.10.4-alpha.3-reserved-field-name-injection-via-object-writes

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