CVE-2026-30938
Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.12 and 9.5.1-alpha.1, the requestKeywordDenylist security control can be bypassed by placing any nested object or array before a prohibited keyword in the request payload. This is caused by a logic bug that stops scanning sibling keys after encountering the first nested value. Any custom requestKeywordDenylist entries configured by the developer are equally by-passable using the same technique. All Parse Server deployments are affected. The requestKeywordDenylist is enabled by default. This vulnerability is fixed in 8.6.12 and 9.5.1-alpha.1. Use a Cloud Code beforeSave trigger to validate incoming data for prohibited keywords across all classes.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
parse-servernpm | < 8.6.12 | 8.6.12 |
parse-servernpm | >= 9.0.0-alpha.1, < 9.5.1-alpha.1 | 9.5.1-alpha.1 |
Affected products
4- osv-coords2 versions
< 8.6.12+ 1 more
- (no CPE)range: < 8.6.12
- (no CPE)range: < 8.6.12
- Range: < 8.6.12
Patches
Vulnerability mechanics
References
5- github.com/parse-community/parse-server/security/advisories/GHSA-q342-9w2p-57fpnvdMitigationPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-q342-9w2p-57fpghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-30938ghsaADVISORY
- github.com/parse-community/parse-server/releases/tag/8.6.12nvdProductRelease NotesWEB
- github.com/parse-community/parse-server/releases/tag/9.5.1-alpha.1nvdProductRelease NotesWEB
News mentions
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