CVE-2026-32886
EPSS 0.03%Parse Server's Cloud function dispatch crashes server via prototype chain traversal
Published: 3/17/2026Modified: 3/20/2026
Description
### 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.
Affected packages (2)
- Bitnami/parsefrom 0, < 8.6.47, >= 9.0.0, < 9.6.0
- npm/parse-server>= 9.0.0, < 9.6.0-alpha.24
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-32886
- PATCHhttps://github.com/parse-community/parse-server
- WEBhttps://github.com/parse-community/parse-server/pull/10210
- WEBhttps://github.com/parse-community/parse-server/pull/10211
- WEBhttps://github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4