Answer in brief
CVE-2023-36475 records a Critical severity (CVSS 9.8) vulnerability in Parse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution. The current sources do not mark it as known exploited. The current feed maps parse-server (npm), parse-server (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps parse-server (npm), parse-server (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| parse-servernpm | >=0 <5.5.2 | 5.5.2 |
| parse-servernpm | >=6.0.0 <6.2.1 | 6.2.1 |
Published upstream
Jun 30, 2023
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
### Impact An attacker can use this prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser. ### Patches Prevent prototype pollution in MongoDB database adapter. ### Workarounds Disable remote code execution through the MongoDB BSON parser. ### Credits - Discovered by hir0ot working with Trend Micro Zero Day Initiative - Fixed by dbythy - Reviewed by mtrezza ### References - https://github.com/parse-community/parse-server/security/advisories/GHSA-462x-c3jw-7vr6 - https://github.com/advisories/GHSA-prm5-8g2m-24gg
Quoted source text, attributed separately from HOL analysis.