CVSS 4.0
8.5 highCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2026-30229
High (8.5) in parseplatform parse-server. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in parse-server 8.6.6, 9.5.0-alpha.4.
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.6 and 9.5.0-alpha.4, the readOnlyMasterKey can call POST /loginAs to obtain a valid session token for any user. This allows a read-only credential to impersonate arbitrary users with full read and write access to their data. Any Parse Server deployment that uses readOnlyMasterKey is affected. This issue has been patched in versions 8.6.6 and 9.5.0-alpha.4.
Severity
CVSS 3.1
7.2 highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- parseplatform:parse-server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-79wj-8rqv-jvp5 | npm | parse-server | <8.6.6 | 8.6.6 |
| GHSA-79wj-8rqv-jvp5 | npm | parse-server | >=9.0.0 <9.5.0-alpha.4 | 9.5.0-alpha.4 |