CVE-2016-20052

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-04. NVD baseline CVSS 9.8; sources differ by 0.0.

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

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

Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by accessing the uploaded file path to achieve remote code execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
59%
KEV
Not listed

Published

April 4, 2026

Last Modified

July 21, 2026

Advisory Details (2)

Auto-updated Sep 12, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Snews CMS 1.7 Unrestricted File Upload via snews_files | Advisories | VulnCheck

https://www.vulncheck.com/advisories/snews-cms-unrestricted-file-upload-via-snews-files
generic🟡 PoC Available

sNews 1.7.1 - Arbitrary File Upload - PHP webapps Exploit

https://www.exploit-db.com/exploits/40706

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 21× 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 203 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2016-20052?
CVE-2016-20052 is a critical vulnerability published on April 4, 2026. Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by…
When was CVE-2016-20052 disclosed?
CVE-2016-20052 was first published in the National Vulnerability Database on April 4, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-20052 actively exploited?
CVE-2016-20052 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 40.7% of all scored CVEs.
What is the CVSS score of CVE-2016-20052?
CVE-2016-20052 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2016-20052?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-20052, 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-2016-20052

Explore →

Is Your Infrastructure Affected by CVE-2016-20052?

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

Start Free Scan →Browse All CVEs