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
7%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 30, 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 20× in last 7d / 106× 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 197 total refreshes for this CVE.

  1. 2026-08-25 13:46 UTCEPSS rescore
  2. 2026-08-25 00:27 UTCEG score recompute
  3. 2026-08-25 00:27 UTCGHSA enrichment
  4. 2026-08-24 14:13 UTCEPSS rescore
  5. 2026-08-24 13:08 UTCEG score recompute
  6. 2026-08-24 13:08 UTCGHSA enrichment
  7. 2026-08-23 20:56 UTCGHSA enrichment
  8. 2026-08-23 09:38 UTCEG score recompute
  9. 2026-08-23 09:38 UTCGHSA enrichment
  10. 2026-08-22 22:20 UTCGHSA enrichment
  11. 2026-08-22 09:56 UTCGHSA enrichment
  12. 2026-08-21 17:25 UTCGHSA enrichment
  13. 2026-08-21 05:39 UTCEG score recompute
  14. 2026-08-21 05:39 UTCGHSA enrichment
  15. 2026-08-20 22:52 UTCEPSS rescore
  16. 2026-08-20 18:19 UTCGHSA enrichment
  17. 2026-08-20 07:01 UTCEG score recompute
  18. 2026-08-20 07:00 UTCGHSA enrichment
  19. 2026-08-19 17:01 UTCEPSS rescore
  20. 2026-08-19 12:39 UTCGHSA enrichment
  21. 2026-08-19 01:12 UTCEG score recompute
  22. 2026-08-19 01:12 UTCGHSA enrichment
  23. 2026-08-18 13:45 UTCEPSS rescore
  24. 2026-08-17 12:57 UTCGHSA enrichment
  25. 2026-08-17 01:39 UTCEG score recompute
Show 75 more
  1. 2026-08-17 01:39 UTCGHSA enrichment
  2. 2026-08-16 14:53 UTCEPSS rescore
  3. 2026-08-16 14:20 UTCGHSA enrichment
  4. 2026-08-16 03:02 UTCEG score recompute
  5. 2026-08-16 03:02 UTCGHSA enrichment
  6. 2026-08-16 02:11 UTCEPSS rescore
  7. 2026-08-15 15:44 UTCGHSA enrichment
  8. 2026-08-15 04:26 UTCEG score recompute
  9. 2026-08-15 04:26 UTCGHSA enrichment
  10. 2026-08-15 01:27 UTCEPSS rescore
  11. 2026-08-14 17:04 UTCGHSA enrichment
  12. 2026-08-14 05:46 UTCEG score recompute
  13. 2026-08-14 05:46 UTCGHSA enrichment
  14. 2026-08-13 21:57 UTCEPSS rescore
  15. 2026-08-13 18:27 UTCGHSA enrichment
  16. 2026-08-13 06:05 UTCGHSA enrichment
  17. 2026-08-12 18:46 UTCEG score recompute
  18. 2026-08-12 18:46 UTCGHSA enrichment
  19. 2026-08-12 13:48 UTCEPSS rescore
  20. 2026-08-12 07:28 UTCGHSA enrichment
  21. 2026-08-11 20:10 UTCEG score recompute
  22. 2026-08-11 20:10 UTCGHSA enrichment
  23. 2026-08-11 13:38 UTCEPSS rescore
  24. 2026-08-11 08:52 UTCGHSA enrichment
  25. 2026-08-10 21:34 UTCEG score recompute
  26. 2026-08-10 21:34 UTCGHSA enrichment
  27. 2026-08-10 10:14 UTCGHSA enrichment
  28. 2026-08-09 22:56 UTCEG score recompute
  29. 2026-08-09 22:56 UTCGHSA enrichment
  30. 2026-08-09 13:44 UTCEPSS rescore
  31. 2026-08-09 11:37 UTCGHSA enrichment
  32. 2026-08-09 00:18 UTCEG score recompute
  33. 2026-08-09 00:18 UTCGHSA enrichment
  34. 2026-08-08 16:34 UTCEPSS rescore
  35. 2026-08-08 13:00 UTCGHSA enrichment
  36. 2026-08-08 01:41 UTCEG score recompute
  37. 2026-08-08 01:41 UTCGHSA enrichment
  38. 2026-08-07 16:24 UTCEPSS rescore
  39. 2026-08-07 14:23 UTCGHSA enrichment
  40. 2026-08-07 03:05 UTCGHSA enrichment
  41. 2026-08-06 15:46 UTCEG score recompute
  42. 2026-08-06 15:46 UTCGHSA enrichment
  43. 2026-08-06 13:44 UTCEPSS rescore
  44. 2026-08-06 04:19 UTCEG score recompute
  45. 2026-08-06 04:19 UTCGHSA enrichment
  46. 2026-08-05 19:15 UTCEPSS rescore
  47. 2026-08-05 17:01 UTCGHSA enrichment
  48. 2026-08-05 02:29 UTCEG score recompute
  49. 2026-08-05 02:29 UTCGHSA enrichment
  50. 2026-08-04 15:06 UTCEPSS rescore
  51. 2026-08-04 15:02 UTCEG score recompute
  52. 2026-08-04 15:02 UTCGHSA enrichment
  53. 2026-08-04 10:34 UTCEPSS rescore
  54. 2026-08-04 01:16 UTCGHSA enrichment
  55. 2026-08-03 13:57 UTCEG score recompute
  56. 2026-08-03 13:57 UTCGHSA enrichment
  57. 2026-08-03 10:33 UTCEPSS rescore
  58. 2026-08-02 23:41 UTCGHSA enrichment
  59. 2026-08-02 12:23 UTCEG score recompute
  60. 2026-08-02 12:23 UTCGHSA enrichment
  61. 2026-08-02 02:24 UTCEPSS rescore
  62. 2026-08-02 01:04 UTCGHSA enrichment
  63. 2026-08-01 13:46 UTCEG score recompute
  64. 2026-08-01 13:46 UTCGHSA enrichment
  65. 2026-08-01 04:13 UTCEPSS rescore
  66. 2026-08-01 02:27 UTCGHSA enrichment
  67. 2026-07-31 14:12 UTCGHSA enrichment
  68. 2026-07-31 02:47 UTCEG score recompute
  69. 2026-07-31 02:47 UTCGHSA enrichment
  70. 2026-07-30 16:25 UTCEPSS rescore
  71. 2026-07-30 14:50 UTCGHSA enrichment
  72. 2026-07-30 13:58 UTCEG score recompute
  73. 2026-07-30 13:58 UTCGHSA enrichment
  74. 2026-07-30 01:28 UTCEPSS rescore
  75. 2026-07-30 00:38 UTCGHSA enrichment

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 July 30, 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 92.5% 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

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