CVE-2022-39396

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 38.7%, top 2% 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).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 39%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Versions prior to 4.10.18, and prior to 5.3.1 on the 5.X branch, are vulnerable to Remote Code Execution via prototype pollution. An attacker can use this prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser. This issue is patched in version 5.3.1 and in 4.10.18. There are no known workarounds.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
—
EPSS
98.4%
KEV
Not listed

Published

November 10, 2022

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated May 27, 2026
Patch available. Sources: github.
github Patch Available

ZDI-CAN-18358: Remote code execution via MongoDB BSON parser through prototype pollution · Advisory · parse-community/parse-server · GitHub

https://github.com/parse-community/parse-server/security/advisories/GHSA-prm5-8g2m-24gg

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
parse-server—5.3.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 42× 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.

  1. 2026-07-22 23:00 UTCEG score recompute
  2. 2026-07-22 14:06 UTCEPSS rescore
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  1. 2026-07-04 06:29 UTCEPSS rescore
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  7. 2026-06-28 14:02 UTCOSV refresh
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  34. 2026-06-11 01:39 UTCOSV refresh
  35. 2026-06-10 22:17 UTCEPSS rescore
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  65. 2026-05-25 12:19 UTCEG score recompute
  66. 2026-05-24 16:51 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-39396?
CVE-2022-39396 is a critical vulnerability published on November 10, 2022. Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Versions prior to 4.10.18, and prior to 5.3.1 on the 5.X branch, are vulnerable to Remote Code Execution via prototype pollution. An attacker can use this prototype pollution sink to trigger a…
When was CVE-2022-39396 disclosed?
CVE-2022-39396 was first published in the National Vulnerability Database on November 10, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-39396 actively exploited?
CVE-2022-39396 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2022-39396?
CVE-2022-39396 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-39396?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-39396, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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