CVE-2021-47954

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.

LayerBB 1.1.4 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the search_query parameter. Attackers can send POST requests to /search.php with malicious search_query values using CASE WHEN statements to extract sensitive database information.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
14.7%
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

LayerBB 1.1.4 SQL Injection via search_query Parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/layerbb-sql-injection-via-search-query-parameter
generic🟡 PoC Available

LayerBB 1.1.4 - 'search_query' SQL Injection - PHP webapps Exploit

https://www.exploit-db.com/exploits/49593

Vendor Advisories for CVE-2021-47954(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 / 63× 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 193 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. 2026-07-01 15:04 UTCEPSS rescore
  21. 2026-06-30 23:20 UTCEPSS rescore
  22. 2026-06-29 21:18 UTCEG score recompute
  23. 2026-06-29 21:18 UTCGHSA enrichment
  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 10:57 UTCEG score recompute
  3. 2026-06-28 10:57 UTCGHSA enrichment
  4. 2026-06-28 04:54 UTCEPSS rescore
  5. 2026-06-28 04:54 UTCEPSS rescore
  6. 2026-06-27 21:54 UTCEG score recompute
  7. 2026-06-27 21:54 UTCGHSA enrichment
  8. 2026-06-27 08:59 UTCEG score recompute
  9. 2026-06-27 08:59 UTCGHSA enrichment
  10. 2026-06-27 03:07 UTCEPSS rescore
  11. 2026-06-27 03:06 UTCEPSS rescore
  12. 2026-06-26 20:03 UTCEG score recompute
  13. 2026-06-26 20:03 UTCGHSA enrichment
  14. 2026-06-25 18:37 UTCEG score recompute
  15. 2026-06-25 18:37 UTCGHSA enrichment
  16. 2026-06-25 13:48 UTCEPSS rescore
  17. 2026-06-25 13:48 UTCEPSS rescore
  18. 2026-06-24 14:03 UTCEPSS rescore
  19. 2026-06-24 14:03 UTCEPSS rescore
  20. 2026-06-23 21:31 UTCEPSS rescore
  21. 2026-06-23 21:31 UTCEPSS rescore
  22. 2026-06-22 14:24 UTCEPSS rescore
  23. 2026-06-21 14:55 UTCEPSS rescore
  24. 2026-06-21 01:58 UTCEPSS rescore
  25. 2026-06-21 01:58 UTCEPSS rescore
  26. 2026-06-19 19:24 UTCEPSS rescore
  27. 2026-06-19 19:24 UTCEPSS rescore
  28. 2026-06-18 17:51 UTCEPSS rescore
  29. 2026-06-18 17:51 UTCEPSS rescore
  30. 2026-06-18 02:48 UTCEG score recompute
  31. 2026-06-18 02:48 UTCGHSA enrichment
  32. 2026-06-17 17:51 UTCEPSS rescore
  33. 2026-06-17 17:51 UTCEPSS rescore
  34. 2026-06-17 13:19 UTCEG score recompute
  35. 2026-06-17 13:19 UTCGHSA enrichment
  36. 2026-06-16 21:43 UTCEG score recompute
  37. 2026-06-16 21:43 UTCGHSA enrichment
  38. 2026-06-16 17:51 UTCEPSS rescore
  39. 2026-06-15 23:23 UTCEG score recompute
  40. 2026-06-15 23:23 UTCGHSA enrichment
  41. 2026-06-15 17:46 UTCEPSS rescore
  42. 2026-06-15 01:00 UTCEG score recompute
  43. 2026-06-15 01:00 UTCGHSA enrichment
  44. 2026-06-14 23:15 UTCEPSS rescore
  45. 2026-06-14 23:15 UTCEPSS rescore
  46. 2026-06-14 12:02 UTCEG score recompute
  47. 2026-06-14 12:02 UTCGHSA enrichment
  48. 2026-06-13 23:07 UTCEG score recompute
  49. 2026-06-13 23:07 UTCGHSA enrichment
  50. 2026-06-13 22:58 UTCEPSS rescore
  51. 2026-06-13 22:58 UTCEPSS rescore
  52. 2026-06-13 03:58 UTCEG score recompute
  53. 2026-06-13 03:58 UTCGHSA enrichment
  54. 2026-06-12 23:10 UTCEPSS rescore
  55. 2026-06-12 14:15 UTCEG score recompute
  56. 2026-06-12 14:15 UTCGHSA enrichment
  57. 2026-06-12 01:20 UTCEG score recompute
  58. 2026-06-12 01:20 UTCGHSA enrichment
  59. 2026-06-11 13:58 UTCEPSS rescore
  60. 2026-06-11 12:25 UTCEG score recompute
  61. 2026-06-11 12:25 UTCGHSA enrichment
  62. 2026-06-10 23:29 UTCEG score recompute
  63. 2026-06-10 23:29 UTCGHSA enrichment
  64. 2026-06-10 22:16 UTCEPSS rescore
  65. 2026-06-10 13:20 UTCEPSS rescore
  66. 2026-06-10 10:33 UTCEG score recompute
  67. 2026-06-10 10:33 UTCGHSA enrichment
  68. 2026-06-09 21:38 UTCEG score recompute
  69. 2026-06-09 21:38 UTCGHSA enrichment
  70. 2026-06-09 08:39 UTCEG score recompute
  71. 2026-06-09 08:39 UTCGHSA enrichment
  72. 2026-06-08 19:43 UTCEG score recompute
  73. 2026-06-08 19:43 UTCGHSA enrichment
  74. 2026-06-08 14:15 UTCEPSS rescore
  75. 2026-06-08 14:15 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-47954?
CVE-2021-47954 is a high vulnerability published on May 16, 2026. LayerBB 1.1.4 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the searchquery parameter. Attackers can send POST requests to /search.php with malicious searchquery values using CASE WHEN statements to extract…
When was CVE-2021-47954 disclosed?
CVE-2021-47954 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-2021-47954 actively exploited?
CVE-2021-47954 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-47954?
CVE-2021-47954 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2021-47954?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47954, 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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