CVE-2020-36939

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-01-27. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.5EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, public exploit)
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 7.5Exploit: Metasploit · public exploitExposed: 0

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

Cassandra Web 0.5.0 contains a directory traversal vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating path traversal parameters. Attackers can exploit the disabled Rack::Protection module to read sensitive system files like /etc/passwd and retrieve Apache Cassandra database credentials.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
75(Track)
EG Risk 75/100SSVC: Track

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
Severity75% × 45%
Exploitation65% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
85%
KEV
Not listed

Published

January 27, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 6, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Cassandra Web 0.5.0 - Remote File Read | Advisories | VulnCheck

https://www.vulncheck.com/advisories/cassandra-web-remote-file-read
generic🟡 PoC Available

Cassandra Web 0.5.0 - Remote File Read - Linux webapps Exploit

https://www.exploit-db.com/exploits/49362
generic

cassandra-web | RubyGems.org | your community gem host

https://rubygems.org/gems/cassandra-web/versions/0.5.0
generic

GitHub - avalanche123/cassandra-web: A web interface for Apache Cassandra · GitHub

https://github.com/avalanche123/cassandra-web

Vendor Advisories for CVE-2020-36939(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
cassandra-web0.1.0 ... 0.5.0 (6 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 24× 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 176 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitauxiliary/scanner/http/cassandra_web_file_read✓ verified
    First seen Jan 1, 2020

    Cassandra Web File Read Vulnerability

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-36939?
CVE-2020-36939 is a high vulnerability published on January 27, 2026. Cassandra Web 0.5.0 contains a directory traversal vulnerability that allows unauthenticated attackers to read arbitrary files by manipulating path traversal parameters. Attackers can exploit the disabled Rack::Protection module to read sensitive system files like /etc/passwd and retrieve Apache…
When was CVE-2020-36939 disclosed?
CVE-2020-36939 was first published in the National Vulnerability Database on January 27, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-36939 actively exploited?
CVE-2020-36939 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 15.1% of all scored CVEs.
What is the CVSS score of CVE-2020-36939?
CVE-2020-36939 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2020-36939?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-36939, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-36939

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