CVE-2026-56122

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

Winstone Servlet Engine through 0.9.10 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files by sending HTTP GET requests with dot-dot-slash sequences that are not sanitized when serving static files from the configured webroot. Attackers can traverse outside the webroot directory using traversal-prefixed paths in a single HTTP request to read any file accessible to the servlet engine process, including sensitive system files when the service runs with elevated privileges.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

Advisory Details (3)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

Winstone Servlet Engine 0.9.10 Path Traversal via HTTP Request Paths | Advisories | VulnCheck

https://www.vulncheck.com/advisories/winstone-servlet-engine-path-traversal-via-http-request-paths
generic

Winstone Servlet Container

https://winstone.sourceforge.net/
generic

Rick Knowles Winstone Servlet Container - Unauthenticated Arbitrary File Read - (CVE-2026-56122) · GitHub

https://gist.github.com/VAMorales/ce93f10215c43b2a8344426f4dd59cd3

Vendor Advisories for CVE-2026-56122(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 5× 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 217 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56122?
CVE-2026-56122 is a high vulnerability published on June 25, 2026. Winstone Servlet Engine through 0.9.10 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files by sending HTTP GET requests with dot-dot-slash sequences that are not sanitized when serving static files from the configured webroot. Attackers can traverse…
When was CVE-2026-56122 disclosed?
CVE-2026-56122 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56122 actively exploited?
CVE-2026-56122 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 55.5% of all scored CVEs.
What is the CVSS score of CVE-2026-56122?
CVE-2026-56122 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-56122?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56122, 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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