CVE-2021-47933

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-10. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

WordPress MStore API 2.0.6 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious files by sending POST requests to the REST API endpoint. Attackers can upload PHP files with arbitrary names to the config_file endpoint to achieve remote code execution on the server.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
44.1%
KEV
Not listed

Published

May 10, 2026

Last Modified

May 12, 2026

Advisory Details (3)

Auto-updated May 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

WordPress MStore API 2.0.6 Arbitrary File Upload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wordpress-mstore-api-arbitrary-file-upload
generic🟡 PoC Available

Wordpress Plugin MStore API 2.0.6 - Arbitrary File Upload - PHP webapps Exploit

https://www.exploit-db.com/exploits/50379
generic

MStore API – Create Native Android & iOS Apps On The Cloud – WordPress plugin | WordPress.org

https://wordpress.org/plugins/mstore-api/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 65× 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 300 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-47933?
CVE-2021-47933 is a critical vulnerability published on May 10, 2026. WordPress MStore API 2.0.6 contains an arbitrary file upload vulnerability that allows unauthenticated attackers to upload malicious files by sending POST requests to the REST API endpoint. Attackers can upload PHP files with arbitrary names to the config_file endpoint to achieve remote code…
When was CVE-2021-47933 disclosed?
CVE-2021-47933 was first published in the National Vulnerability Database on May 10, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47933 actively exploited?
CVE-2021-47933 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-47933?
CVE-2021-47933 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-47933?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47933, 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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