Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 on MongoDB skips field type validation for null-valued dot notation keys,…
CVE-2026-121415
Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 on MongoDB skips field type validation for null-valued dot notation keys, allowing sub-documents to be written beneath Pointer, Number, String, Date, or Boolean fields. Any client with write access, including unauthenticated clients where public writes are permitted, can corrupt field values, make objects unreadable via internal date fields, or break atomic operations on number fields.
Assessment
- CVSS
- 6.3 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 3 November 2026
- Last updated
- 3 November 2026
- Affected
- parse-community · parse-server
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
At the source
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-655c-2xf3-77x9
- https://github.com/parse-community/parse-server/pull/10804
- https://github.com/parse-community/parse-server/pull/10805
- https://www.vulncheck.com/advisories/parse-server-before-8.6.111-and-9.0.0-before-9.10.6-alpha.3-field-corruption-via-null-dot-notation-key
- https://nvd.nist.gov/vuln/detail/CVE-2026-121415
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