CVE-2021-47956

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-16. NVD baseline CVSS 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

EgavilanMedia PHPCRUD 1.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the firstname parameter. Attackers can send POST requests to insert.php with malicious firstname values to extract sensitive database information.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
19.5%
KEV
Not listed

Published

May 16, 2026

Last Modified

May 18, 2026

Advisory Details (2)

Auto-updated May 16, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

EgavilanMedia PHPCRUD 1.0 SQL Injection via firstname | Advisories | VulnCheck

https://www.vulncheck.com/advisories/egavilanmedia-phpcrud-sql-injection-via-firstname
generic🟡 PoC Available

EgavilanMedia PHPCRUD 1.0 - 'First Name' SQL Injection - PHP webapps Exploit

https://www.exploit-db.com/exploits/49878

Vendor Advisories for CVE-2021-47956(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 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 195 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 21:18 UTCEG score recompute
  25. 2026-06-29 21:18 UTCGHSA enrichment
Show 75 more
  1. 2026-06-29 14:04 UTCEPSS rescore
  2. 2026-06-29 14:04 UTCEPSS rescore
  3. 2026-06-28 14:05 UTCEPSS rescore
  4. 2026-06-28 10:57 UTCEG score recompute
  5. 2026-06-28 10:57 UTCGHSA enrichment
  6. 2026-06-28 04:54 UTCEPSS rescore
  7. 2026-06-28 04:54 UTCEPSS rescore
  8. 2026-06-27 21:43 UTCEG score recompute
  9. 2026-06-27 21:43 UTCGHSA enrichment
  10. 2026-06-27 08:48 UTCEG score recompute
  11. 2026-06-27 08:48 UTCGHSA enrichment
  12. 2026-06-27 03:07 UTCEPSS rescore
  13. 2026-06-27 03:06 UTCEPSS rescore
  14. 2026-06-26 20:03 UTCEG score recompute
  15. 2026-06-26 20:03 UTCGHSA enrichment
  16. 2026-06-25 18:37 UTCEG score recompute
  17. 2026-06-25 18:37 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. 2026-06-18 02:48 UTCEG score recompute
  33. 2026-06-18 02:48 UTCGHSA enrichment
  34. 2026-06-17 17:51 UTCEPSS rescore
  35. 2026-06-17 17:51 UTCEPSS rescore
  36. 2026-06-17 13:19 UTCEG score recompute
  37. 2026-06-17 13:19 UTCGHSA enrichment
  38. 2026-06-16 21:43 UTCEG score recompute
  39. 2026-06-16 21:43 UTCGHSA enrichment
  40. 2026-06-16 17:51 UTCEPSS rescore
  41. 2026-06-15 23:23 UTCEG score recompute
  42. 2026-06-15 23:22 UTCGHSA enrichment
  43. 2026-06-15 17:46 UTCEPSS rescore
  44. 2026-06-15 07:53 UTCEG score recompute
  45. 2026-06-15 07:53 UTCGHSA enrichment
  46. 2026-06-14 23:15 UTCEPSS rescore
  47. 2026-06-14 23:15 UTCEPSS rescore
  48. 2026-06-14 18:26 UTCEG score recompute
  49. 2026-06-14 18:26 UTCGHSA enrichment
  50. 2026-06-14 05:26 UTCEG score recompute
  51. 2026-06-14 05:25 UTCGHSA enrichment
  52. 2026-06-13 22:58 UTCEPSS rescore
  53. 2026-06-13 22:58 UTCEPSS rescore
  54. 2026-06-13 15:05 UTCEG score recompute
  55. 2026-06-13 15:05 UTCGHSA enrichment
  56. 2026-06-13 02:11 UTCEG score recompute
  57. 2026-06-13 02:11 UTCGHSA enrichment
  58. 2026-06-12 23:10 UTCEPSS rescore
  59. 2026-06-12 13:25 UTCEG score recompute
  60. 2026-06-12 13:25 UTCGHSA enrichment
  61. 2026-06-12 00:40 UTCEG score recompute
  62. 2026-06-12 00:40 UTCGHSA enrichment
  63. 2026-06-11 13:58 UTCEPSS rescore
  64. 2026-06-11 11:56 UTCEG score recompute
  65. 2026-06-11 11:56 UTCGHSA enrichment
  66. 2026-06-10 23:11 UTCEG score recompute
  67. 2026-06-10 23:11 UTCGHSA enrichment
  68. 2026-06-10 22:16 UTCEPSS rescore
  69. 2026-06-10 13:20 UTCEPSS rescore
  70. 2026-06-10 10:27 UTCEG score recompute
  71. 2026-06-10 10:26 UTCGHSA enrichment
  72. 2026-06-09 21:38 UTCEG score recompute
  73. 2026-06-09 21:38 UTCGHSA enrichment
  74. 2026-06-09 08:28 UTCEG score recompute
  75. 2026-06-09 08:28 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-47956?
CVE-2021-47956 is a high vulnerability published on May 16, 2026. EgavilanMedia PHPCRUD 1.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the firstname parameter. Attackers can send POST requests to insert.php with malicious firstname values to extract sensitive database…
When was CVE-2021-47956 disclosed?
CVE-2021-47956 was first published in the National Vulnerability Database on May 16, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47956 actively exploited?
CVE-2021-47956 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-47956?
CVE-2021-47956 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2021-47956?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47956, 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

Explore the affected products and dependency analysis for CVE-2021-47956

Explore →

Is Your Infrastructure Affected by CVE-2021-47956?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs