CVE-2021-47986

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-26. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

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

Parse Server before 4.10.0 contains a supply chain vulnerability where incorrect version tags were pushed to the repository linking to unreviewed code in a personal fork. Attackers could exploit this by specifying affected version tags in dependency declarations to execute unreviewed and potentially malicious code.

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 computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Patch available. Sources: github.
generic

Parse Server - Unreviewed Code Execution via Malicious Version Tags | Advisories | VulnCheck

https://www.vulncheck.com/advisories/parse-server-unreviewed-code-execution-via-malicious-version-tags
github Patch Available

Incorrect version tags linked to external repository · Advisory · parse-community/parse-server · GitHub

https://github.com/parse-community/parse-server/security/advisories/GHSA-593v-wcqx-hq2w

Vendor Advisories for CVE-2021-47986(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
parse-server—4.10.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 84× 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. 2026-07-27 02:14 UTCGHSA enrichment
  2. 2026-07-26 14:54 UTCEG score recompute
  3. 2026-07-26 14:54 UTCGHSA enrichment
  4. 2026-07-24 14:15 UTCEPSS rescore
  5. 2026-07-24 14:15 UTCEPSS rescore
  6. 2026-07-23 14:16 UTCEPSS rescore
  7. 2026-07-23 02:06 UTCEG score recompute
  8. 2026-07-22 22:53 UTCEG score recompute
  9. 2026-07-22 14:06 UTCEPSS rescore
  10. 2026-07-21 15:22 UTCEPSS rescore
  11. 2026-07-21 15:22 UTCEPSS rescore
  12. 2026-07-20 17:05 UTCEPSS rescore
  13. 2026-07-19 14:29 UTCEPSS rescore
  14. 2026-07-19 02:27 UTCEPSS rescore
  15. 2026-07-19 02:27 UTCEPSS rescore
  16. 2026-07-18 10:02 UTCEPSS rescore
  17. 2026-07-17 06:17 UTCGHSA enrichment
  18. 2026-07-16 18:59 UTCGHSA enrichment
  19. 2026-07-16 17:00 UTCEPSS rescore
  20. 2026-07-16 17:00 UTCEPSS rescore
  21. 2026-07-16 07:41 UTCGHSA enrichment
  22. 2026-07-15 20:22 UTCGHSA enrichment
  23. 2026-07-15 16:55 UTCEPSS rescore
  24. 2026-07-15 09:03 UTCGHSA enrichment
  25. 2026-07-15 01:58 UTCEPSS rescore
Show 66 more
  1. 2026-07-15 01:58 UTCEPSS rescore
  2. 2026-07-14 21:37 UTCGHSA enrichment
  3. 2026-07-14 10:18 UTCGHSA enrichment
  4. 2026-07-13 23:00 UTCGHSA enrichment
  5. 2026-07-13 22:27 UTCEPSS rescore
  6. 2026-07-13 11:42 UTCGHSA enrichment
  7. 2026-07-13 06:11 UTCEPSS rescore
  8. 2026-07-13 06:11 UTCEPSS rescore
  9. 2026-07-13 00:23 UTCGHSA enrichment
  10. 2026-07-12 13:05 UTCGHSA enrichment
  11. 2026-07-12 05:44 UTCEPSS rescore
  12. 2026-07-12 01:44 UTCGHSA enrichment
  13. 2026-07-11 14:25 UTCGHSA enrichment
  14. 2026-07-11 08:25 UTCEPSS rescore
  15. 2026-07-11 03:06 UTCGHSA enrichment
  16. 2026-07-10 15:44 UTCGHSA enrichment
  17. 2026-07-10 04:05 UTCGHSA enrichment
  18. 2026-07-09 19:07 UTCEPSS rescore
  19. 2026-07-09 19:07 UTCEPSS rescore
  20. 2026-07-09 16:46 UTCGHSA enrichment
  21. 2026-07-09 05:27 UTCGHSA enrichment
  22. 2026-07-08 18:08 UTCGHSA enrichment
  23. 2026-07-08 15:12 UTCEPSS rescore
  24. 2026-07-08 15:12 UTCEPSS rescore
  25. 2026-07-08 06:49 UTCGHSA enrichment
  26. 2026-07-07 19:31 UTCGHSA enrichment
  27. 2026-07-07 13:43 UTCEPSS rescore
  28. 2026-07-07 07:49 UTCGHSA enrichment
  29. 2026-07-06 20:26 UTCGHSA enrichment
  30. 2026-07-06 16:25 UTCEPSS rescore
  31. 2026-07-06 16:25 UTCEPSS rescore
  32. 2026-07-06 09:05 UTCGHSA enrichment
  33. 2026-07-06 02:21 UTCEPSS rescore
  34. 2026-07-06 02:21 UTCEPSS rescore
  35. 2026-07-05 21:28 UTCGHSA enrichment
  36. 2026-07-05 10:10 UTCGHSA enrichment
  37. 2026-07-04 22:51 UTCGHSA enrichment
  38. 2026-07-04 11:33 UTCGHSA enrichment
  39. 2026-07-04 00:15 UTCGHSA enrichment
  40. 2026-07-03 12:55 UTCGHSA enrichment
  41. 2026-07-03 01:37 UTCGHSA enrichment
  42. 2026-07-02 14:18 UTCGHSA enrichment
  43. 2026-07-02 03:00 UTCGHSA enrichment
  44. 2026-07-01 15:41 UTCGHSA enrichment
  45. 2026-07-01 15:04 UTCEPSS rescore
  46. 2026-07-01 04:21 UTCGHSA enrichment
  47. 2026-06-30 23:20 UTCEPSS rescore
  48. 2026-06-30 17:00 UTCGHSA enrichment
  49. 2026-06-30 05:40 UTCGHSA enrichment
  50. 2026-06-29 18:21 UTCGHSA enrichment
  51. 2026-06-29 14:04 UTCEPSS rescore
  52. 2026-06-29 14:04 UTCEPSS rescore
  53. 2026-06-29 07:02 UTCGHSA enrichment
  54. 2026-06-28 19:41 UTCGHSA enrichment
  55. 2026-06-28 14:05 UTCEPSS rescore
  56. 2026-06-28 08:22 UTCGHSA enrichment
  57. 2026-06-28 04:54 UTCEPSS rescore
  58. 2026-06-28 04:54 UTCEPSS rescore
  59. 2026-06-27 21:04 UTCGHSA enrichment
  60. 2026-06-27 09:46 UTCGHSA enrichment
  61. 2026-06-27 03:07 UTCEPSS rescore
  62. 2026-06-27 03:06 UTCEPSS rescore
  63. 2026-06-26 22:28 UTCGHSA enrichment
  64. 2026-06-26 11:09 UTCGHSA enrichment
  65. 2026-06-25 23:51 UTCEG score recompute
  66. 2026-06-25 23:50 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2021-47986?
CVE-2021-47986 is a high vulnerability published on June 25, 2026. Parse Server before 4.10.0 contains a supply chain vulnerability where incorrect version tags were pushed to the repository linking to unreviewed code in a personal fork. Attackers could exploit this by specifying affected version tags in dependency declarations to execute unreviewed and…
When was CVE-2021-47986 disclosed?
CVE-2021-47986 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47986 actively exploited?
CVE-2021-47986 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.8% of all scored CVEs.
What is the CVSS score of CVE-2021-47986?
CVE-2021-47986 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2021-47986?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47986, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-47986

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