CVE-2021-47986

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH 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
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 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(high)
EPSS
2.2%
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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 36× in last 7d / 61× 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. 2026-07-06 20:26 UTCEG score recompute
  2. 2026-07-06 20:26 UTCGHSA enrichment
  3. 2026-07-06 16:25 UTCEPSS rescore
  4. 2026-07-06 16:25 UTCEPSS rescore
  5. 2026-07-06 09:05 UTCEG score recompute
  6. 2026-07-06 09:05 UTCGHSA enrichment
  7. 2026-07-06 02:21 UTCEPSS rescore
  8. 2026-07-06 02:21 UTCEPSS rescore
  9. 2026-07-05 21:28 UTCEG score recompute
  10. 2026-07-05 21:28 UTCGHSA enrichment
  11. 2026-07-05 10:10 UTCEG score recompute
  12. 2026-07-05 10:10 UTCGHSA enrichment
  13. 2026-07-04 22:51 UTCEG score recompute
  14. 2026-07-04 22:51 UTCGHSA enrichment
  15. 2026-07-04 11:33 UTCEG score recompute
  16. 2026-07-04 11:33 UTCGHSA enrichment
  17. 2026-07-04 00:15 UTCEG score recompute
  18. 2026-07-04 00:15 UTCGHSA enrichment
  19. 2026-07-03 12:55 UTCEG score recompute
  20. 2026-07-03 12:55 UTCGHSA enrichment
  21. 2026-07-03 01:37 UTCEG score recompute
  22. 2026-07-03 01:37 UTCGHSA enrichment
  23. 2026-07-02 14:18 UTCEG score recompute
  24. 2026-07-02 14:18 UTCGHSA enrichment
  25. 2026-07-02 03:00 UTCEG score recompute
Show 36 more
  1. 2026-07-02 03:00 UTCGHSA enrichment
  2. 2026-07-01 15:41 UTCEG score recompute
  3. 2026-07-01 15:41 UTCGHSA enrichment
  4. 2026-07-01 15:04 UTCEPSS rescore
  5. 2026-07-01 04:21 UTCEG score recompute
  6. 2026-07-01 04:21 UTCGHSA enrichment
  7. 2026-06-30 23:20 UTCEPSS rescore
  8. 2026-06-30 17:00 UTCEG score recompute
  9. 2026-06-30 17:00 UTCGHSA enrichment
  10. 2026-06-30 05:40 UTCEG score recompute
  11. 2026-06-30 05:40 UTCGHSA enrichment
  12. 2026-06-29 18:21 UTCEG score recompute
  13. 2026-06-29 18:21 UTCGHSA enrichment
  14. 2026-06-29 14:04 UTCEPSS rescore
  15. 2026-06-29 14:04 UTCEPSS rescore
  16. 2026-06-29 07:02 UTCEG score recompute
  17. 2026-06-29 07:02 UTCGHSA enrichment
  18. 2026-06-28 19:41 UTCEG score recompute
  19. 2026-06-28 19:41 UTCGHSA enrichment
  20. 2026-06-28 14:05 UTCEPSS rescore
  21. 2026-06-28 08:22 UTCEG score recompute
  22. 2026-06-28 08:22 UTCGHSA enrichment
  23. 2026-06-28 04:54 UTCEPSS rescore
  24. 2026-06-28 04:54 UTCEPSS rescore
  25. 2026-06-27 21:04 UTCEG score recompute
  26. 2026-06-27 21:04 UTCGHSA enrichment
  27. 2026-06-27 09:46 UTCEG score recompute
  28. 2026-06-27 09:46 UTCGHSA enrichment
  29. 2026-06-27 03:07 UTCEPSS rescore
  30. 2026-06-27 03:06 UTCEPSS rescore
  31. 2026-06-26 22:28 UTCEG score recompute
  32. 2026-06-26 22:28 UTCGHSA enrichment
  33. 2026-06-26 11:10 UTCEG score recompute
  34. 2026-06-26 11:09 UTCGHSA enrichment
  35. 2026-06-25 23:51 UTCEG score recompute
  36. 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 2.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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