CVE-2026-32886
published 2026-03-18CVE-2026-32886: Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.24 and 8.6.47, remote clients can…
PriorityP345high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.51%
39.7th percentile
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.24 and 8.6.47, remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow. The fix in versions 9.6.0-alpha.24 and 8.6.47 restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers. There is no known workaround.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| parse-community | parse-server | < 8.6.47 | 8.6.47 |
| parse-community | parse-server | — | — |
| parse-community | parse-server | >= 0 < 8.6.47 | 8.6.47 |
| parse-community | parse-server | >= 9.0.0 < 9.6.0-alpha.24 | 9.6.0-alpha.24 |
| parseplatform | parse-server | < 8.6.47 | 8.6.47 |
| parseplatform | parse-server | — | — |
| parseplatform | parse-server | >= 9.0.0 < 9.6.0 | 9.6.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.2HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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OSV
Parse Server's Cloud function dispatch crashes server via prototype chain traversal
osv·2026-03-17
CVE-2026-32886 [HIGH] Parse Server's Cloud function dispatch crashes server via prototype chain traversal
Parse Server's Cloud function dispatch crashes server via prototype chain traversal
### Impact
Remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow.
### Patches
The fix restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers.
### Workarounds
There is no known workaround.
GHSA
Parse Server's Cloud function dispatch crashes server via prototype chain traversal
ghsa·2026-03-17
CVE-2026-32886 [HIGH] CWE-1321 Parse Server's Cloud function dispatch crashes server via prototype chain traversal
Parse Server's Cloud function dispatch crashes server via prototype chain traversal
### Impact
Remote clients can crash the Parse Server process by calling a cloud function endpoint with a crafted function name that traverses the JavaScript prototype chain of a registered cloud function handler, causing a stack overflow.
### Patches
The fix restricts property lookups during cloud function name resolution to own properties only, preventing prototype chain traversal from stored function handlers.
### Workarounds
There is no known workaround.
No detection rules found.
No public exploits indexed.
2026-03-18
Published