CVE-2026-55202

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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.

Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger unauthorized access to internal proxy statistics or misroute requests as transparent proxy connections to circumvent access controls.

CVSS v3
8.2
EG Score
8.2(high)
EPSS
25.5%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 23, 2026

Advisory Details (3)

Auto-updated Jun 17, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
generic

Evil-WinRM - Path Traversal in download_dir() Function | Advisories | VulnCheck

https://www.vulncheck.com/advisories/evil-winrm-path-traversal-in-download-dir-function
github_pr

reqs: improve stathost detection

Fix merged in tinyproxy/tinyproxy PR #606 on 2026-04-17 — awaiting tagged release

https://github.com/tinyproxy/tinyproxy/pull/606
github_commit

commit 09312a185ae2 (tinyproxy/tinyproxy)

Fix landed in tinyproxy/tinyproxy commit 09312a185ae2 — awaiting tagged release

https://github.com/tinyproxy/tinyproxy/commit/09312a185ae25cc486b4ff5987638a7917a48bce

Vendor Advisories for CVE-2026-55202(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 40× in last 7d / 114× 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 114 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-55202?
CVE-2026-55202 is a high vulnerability published on June 17, 2026. Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost detection, allowing unauthenticated attackers to access the stats page by injecting a matching Host header or bypass detection via port manipulation. Remote attackers can trigger…
When was CVE-2026-55202 disclosed?
CVE-2026-55202 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55202 actively exploited?
CVE-2026-55202 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-55202?
CVE-2026-55202 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-55202?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55202, 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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