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.
CVE-2026-32886
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 59% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 43%
- KEV
- Not listed
Published
March 18, 2026
Last Modified
June 17, 2026
Advisory Details (3)
Auto-updated Aug 2, 2026Cloud function dispatch crashes server via prototype chain traversal · Advisory · parse-community/parse-server · GitHub
https://github.com/parse-community/parse-server/security/advisories/GHSA-4263-jgmp-7pf4fix: Cloud function dispatch crashes server via prototype chain traversal (GHSA-4263-jgmp-7pf4)
Patch available: parse-community/parse-server 8.6.81 (PR #10211 merged 2026-03-15)
https://github.com/parse-community/parse-server/pull/10211fix: Cloud function dispatch crashes server via prototype chain traversal (GHSA-4263-jgmp-7pf4)
Patch available: parse-community/parse-server 9.9.1-alpha.6 (PR #10210 merged 2026-03-15)
https://github.com/parse-community/parse-server/pull/10210Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| parse-server | — | 8.6.47 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 30× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-07-27 14:40 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-32886?
When was CVE-2026-32886 disclosed?
Is CVE-2026-32886 actively exploited?
What is the CVSS score of CVE-2026-32886?
How do I remediate CVE-2026-32886?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-32886
Is Your Infrastructure Affected by CVE-2026-32886?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.