CVE-2026-56022

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-18. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: None knownExposed: 0

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

Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header, allowing bypass of additional MFA requirements. Fixed in 2.640.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

June 18, 2026

Last Modified

August 11, 2026

Advisory Details (3)

Auto-updated Jun 19, 2026
Patch available. Sources: github_release.
generic
https://www.cve.org/CVERecord?id=CVE-2026-56022
generic

Security | Webmin

https://webmin.com/security/#webmin-prior-to-2641
github_release Patch Available

2.641

Patch available: webmin/webmin 2.641

https://github.com/webmin/webmin/releases/tag/2.641

Vendor Advisories for CVE-2026-56022(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 16× in last 7d / 78× 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 153 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-56022?
CVE-2026-56022 is a medium vulnerability published on June 18, 2026. Webmin accepts basic authentication without session cookies when an attacker provides the 'User-Agent: webmin' header, allowing bypass of additional MFA requirements. Fixed in 2.640.
When was CVE-2026-56022 disclosed?
CVE-2026-56022 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56022 actively exploited?
CVE-2026-56022 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 56.1% of all scored CVEs.
What is the CVSS score of CVE-2026-56022?
CVE-2026-56022 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-56022?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56022, 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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