CVE-2026-121415
Parse Server before 8.6.111 and 9.0.0 before 9.10.6-alpha.3 Field Corruption via Null Dot Notation Key
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| parse-server parse-community parse-server
npm |
≥ 9.0.0; < 9.10.6-alpha.3 (affected, semver) 9.10.6-alpha.3 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
| parse-server parse-community parse-server
npm |
≥ 0; < 8.6.111 (affected, semver) 8.6.111 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.3 medium |
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 3.7 low |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | CNA: VulnCheck |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/parse-community/parse-server/security/advisories/GHSA-655c-2xf3-77x9CNA: VulnCheck · vendor-advisory
- https://github.com/parse-community/parse-server/pull/10804CNA: VulnCheck · patch, issue-tracking
- https://github.com/parse-community/parse-server/pull/10805CNA: VulnCheck · patch, issue-tracking
- 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-keyCNA: VulnCheck · third-party-advisory
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