CVSS 4.0
8.7 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVE-2026-33538
High (8.7) in parseplatform parse-server. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in parse-server 8.6.58, 9.6.0-alpha.52.
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.58 and 9.6.0-alpha.52, an unauthenticated attacker can cause denial of service by sending authentication requests with arbitrary, unconfigured provider names. The server executes a database query for each unconfigured provider before rejecting the request, and since no database index exists for unconfigured providers, each request triggers a full collection scan on the user database. This can be parallelized to saturate database resources. This issue has been patched in versions 8.6.58 and 9.6.0-alpha.52.
Severity
CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
- CWE
- CWE-400
- Published
- Modified
- Record from
- the NVD, synced
Affected
- parseplatform:parse-server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-g4cf-xj29-wqqr | npm | parse-server | >=9.0.0 <9.6.0-alpha.52 | 9.6.0-alpha.52 |
| GHSA-g4cf-xj29-wqqr | npm | parse-server | <8.6.58 | 8.6.58 |
References
- https://github.com/parse-community/parse-server/commit/40eb442e02672986730007d0a1edb22c1c4bd357
- https://github.com/parse-community/parse-server/commit/fbac847499e57f243315c5fc7135be1d58bb8e54
- https://github.com/parse-community/parse-server/pull/10270
- https://github.com/parse-community/parse-server/pull/10271
- https://github.com/parse-community/parse-server/security/advisories/GHSA-g4cf-xj29-wqqr