CVE-2023-36475

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 9.8%, top 7% 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
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%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. Prior to versions 5.5.2 and 6.2.1, an attacker can use a prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser. A patch is available in versions 5.5.2 and 6.2.1.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
86.8%
KEV
Not listed

Published

June 28, 2023

Last Modified

November 21, 2024

Advisory Details (7)

Auto-updated Jun 6, 2026
Patch available. Sources: github_commit, github_release, github.
generic

fix: Remote code execution via MongoDB BSON parser through prototype pollution by mtrezza · Pull Request #8674 · parse-community/parse-server · GitHub

https://github.com/parse-community/parse-server/issues/8674
github_commit

commit 5fad2928fb8e (parse-community/parse-server)

Fix landed in parse-community/parse-server commit 5fad2928fb8e — awaiting tagged release

https://github.com/parse-community/parse-server/commit/5fad2928fb8ee17304abcdcf259932f827d8c81f
github_commit Patch Available

commit 3dd99dd80e27 (parse-community/parse-server)

Patch available: parse-community/parse-server 9.8.0-alpha.4 (contains commit 3dd99dd80e27)

https://github.com/parse-community/parse-server/commit/3dd99dd80e27e5e1d99b42844180546d90c7aa90
github Patch Available

ZDI-CAN-19904: 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-462x-c3jw-7vr6
github_release Patch Available

6.2.1

Patch available: parse-community/parse-server 6.2.1

https://github.com/parse-community/parse-server/releases/tag/6.2.1
github_release Patch Available

5.5.2

Patch available: parse-community/parse-server 5.5.2

https://github.com/parse-community/parse-server/releases/tag/5.5.2
generic

fix: Remote code execution via MongoDB BSON parser through prototype pollution by mtrezza · Pull Request #8675 · parse-community/parse-server · GitHub

https://github.com/parse-community/parse-server/issues/8675

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
parse-server—6.2.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 49× 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.

Showing the most recent 100 of 101 total refreshes for this CVE.

  1. 2026-07-22 14:06 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
  3. 2026-07-21 15:23 UTCEPSS rescore
  4. 2026-07-20 17:06 UTCEPSS rescore
  5. 2026-07-19 14:29 UTCEPSS rescore
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  9. 2026-07-18 10:03 UTCEPSS rescore
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  11. 2026-07-16 17:01 UTCEPSS rescore
  12. 2026-07-15 16:56 UTCEPSS rescore
  13. 2026-07-15 16:56 UTCEPSS rescore
  14. 2026-07-15 16:49 UTCOSV refresh
  15. 2026-07-15 01:58 UTCEPSS rescore
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  17. 2026-07-13 22:28 UTCEPSS rescore
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  21. 2026-07-12 05:45 UTCEPSS rescore
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  24. 2026-07-09 19:08 UTCEPSS rescore
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  1. 2026-07-08 15:13 UTCEPSS rescore
  2. 2026-07-07 13:44 UTCEPSS rescore
  3. 2026-07-06 16:26 UTCEPSS rescore
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  5. 2026-07-06 02:21 UTCEPSS rescore
  6. 2026-07-05 02:29 UTCEPSS rescore
  7. 2026-07-04 06:29 UTCEPSS rescore
  8. 2026-07-02 16:59 UTCEPSS rescore
  9. 2026-07-01 15:04 UTCEPSS rescore
  10. 2026-06-30 23:21 UTCEPSS rescore
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  12. 2026-06-29 14:05 UTCEPSS rescore
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  14. 2026-06-28 14:06 UTCEPSS rescore
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  18. 2026-06-27 17:04 UTCOSV refresh
  19. 2026-06-27 03:07 UTCEPSS rescore
  20. 2026-06-27 03:07 UTCEPSS rescore
  21. 2026-06-25 13:48 UTCEPSS rescore
  22. 2026-06-25 13:48 UTCEPSS rescore
  23. 2026-06-24 14:04 UTCEPSS rescore
  24. 2026-06-24 14:03 UTCEPSS rescore
  25. 2026-06-22 14:24 UTCEPSS rescore
  26. 2026-06-22 14:24 UTCEPSS rescore
  27. 2026-06-21 14:55 UTCEPSS rescore
  28. 2026-06-21 14:55 UTCEPSS rescore
  29. 2026-06-21 01:58 UTCEPSS rescore
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  31. 2026-06-19 19:24 UTCEPSS rescore
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  33. 2026-06-18 17:51 UTCEPSS rescore
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  37. 2026-06-16 17:51 UTCEPSS rescore
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  39. 2026-06-15 17:47 UTCEPSS rescore
  40. 2026-06-14 23:16 UTCEPSS rescore
  41. 2026-06-13 22:59 UTCEPSS rescore
  42. 2026-06-13 22:59 UTCEPSS rescore
  43. 2026-06-12 23:10 UTCEPSS rescore
  44. 2026-06-12 23:10 UTCEPSS rescore
  45. 2026-06-11 13:59 UTCEPSS rescore
  46. 2026-06-11 13:59 UTCEPSS rescore
  47. 2026-06-10 22:17 UTCEPSS rescore
  48. 2026-06-10 13:21 UTCEPSS rescore
  49. 2026-06-10 03:47 UTCOSV refresh
  50. 2026-06-08 14:16 UTCEPSS rescore
  51. 2026-06-08 14:15 UTCEPSS rescore
  52. 2026-06-07 15:23 UTCEPSS rescore
  53. 2026-06-07 15:23 UTCEPSS rescore
  54. 2026-06-06 13:46 UTCEPSS rescore
  55. 2026-06-06 13:46 UTCEPSS rescore
  56. 2026-06-05 22:46 UTCEPSS rescore
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  58. 2026-06-05 06:09 UTCEPSS rescore
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  60. 2026-06-04 13:11 UTCEPSS rescore
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  62. 2026-06-02 20:12 UTCEPSS rescore
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  65. 2026-05-31 22:30 UTCEPSS rescore
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  67. 2026-05-31 22:29 UTCEPSS rescore
  68. 2026-05-31 00:15 UTCEPSS rescore
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  70. 2026-05-29 13:43 UTCEPSS rescore
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  72. 2026-05-28 13:43 UTCEPSS rescore
  73. 2026-05-28 13:43 UTCEPSS rescore
  74. 2026-05-27 13:39 UTCEPSS rescore
  75. 2026-05-24 22:15 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-36475?
CVE-2023-36475 is a critical vulnerability published on June 28, 2023. Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 5.5.2 and 6.2.1, an attacker can use a prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser. A patch is available in versions 5.5.2 and…
When was CVE-2023-36475 disclosed?
CVE-2023-36475 was first published in the National Vulnerability Database on June 28, 2023, 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-2023-36475 actively exploited?
CVE-2023-36475 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 86.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-36475?
CVE-2023-36475 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-36475?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36475, 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.

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