CVE-2026-11422

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-05. the CNA's CVSS baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

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

Markdown Preview Enhanced 0.8.x with crossnote engine 0.9.28 contains a code injection vulnerability in the WaveDrom rendering pipeline that allows attackers to execute arbitrary JavaScript by embedding malicious content in a wavedrom fenced code block within a crafted Markdown document. Attackers can exploit the unsanitized passing of wavedrom block content to window.eval() in the VS Code webview context to abuse the extension's message passing and invoke arbitrary file writes on the local filesystem.

CVSS v3
7.1
EG Score
7.1(high)
EPSS
5.4%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 23, 2026

Advisory Details (3)

Auto-updated Jun 11, 2026
Patch available. Sources: github_commit.
generic

[BUG] [Security Vulnerability] Arbitrary File Write via WaveDrom eval() Code Injection in Markdown Preview Enhanced · Issue #2315 · shd101wyy/vscode-markdown-preview-enhanced · GitHub

https://github.com/shd101wyy/vscode-markdown-preview-enhanced/issues/2315
github_commit Patch Available

commit dcd80281c986 (shd101wyy/vscode-markdown-preview-enhanced)

Patch available: shd101wyy/vscode-markdown-preview-enhanced 0.8.28 (contains commit dcd80281c986)

https://github.com/shd101wyy/vscode-markdown-preview-enhanced/commit/dcd80281c986293b93d9f1af34ced64dcb230c77
github_commit Patch Available

commit 5588ca2121c3 (shd101wyy/crossnote)

Patch available: shd101wyy/crossnote 0.9.29 (contains commit 5588ca2121c3)

https://github.com/shd101wyy/crossnote/commit/5588ca2121c3da43fe331575dc5cf4ef347b91ee

Vendor Advisories for CVE-2026-11422(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 23× in last 7d / 132× 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 140 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-11422?
CVE-2026-11422 is a high vulnerability published on June 5, 2026. Markdown Preview Enhanced 0.8.x with crossnote engine 0.9.28 contains a code injection vulnerability in the WaveDrom rendering pipeline that allows attackers to execute arbitrary JavaScript by embedding malicious content in a wavedrom fenced code block within a crafted Markdown document. Attackers…
When was CVE-2026-11422 disclosed?
CVE-2026-11422 was first published in the National Vulnerability Database on June 5, 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-2026-11422 actively exploited?
CVE-2026-11422 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11422?
CVE-2026-11422 has a CVSS v4.0 base score of 7.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-11422?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11422, 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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