CVE-2026-11422

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-05. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 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(medium)
EG Risk
48(Track*)
EG Risk 48/100SSVC: 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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

June 5, 2026

Last Modified

July 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 17× in last 7d / 89× 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 216 total refreshes for this CVE.

  1. 2026-08-25 13:48 UTCEPSS rescore
  2. 2026-08-25 01:49 UTCEG score recompute
  3. 2026-08-25 01:49 UTCGHSA enrichment
  4. 2026-08-24 01:43 UTCGHSA enrichment
  5. 2026-08-23 12:22 UTCEG score recompute
  6. 2026-08-23 12:22 UTCGHSA enrichment
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 01:51 UTCEG score recompute
  9. 2026-08-22 01:51 UTCGHSA enrichment
  10. 2026-08-21 23:48 UTCEPSS rescore
  11. 2026-08-21 12:45 UTCEG score recompute
  12. 2026-08-21 12:45 UTCGHSA enrichment
  13. 2026-08-20 22:55 UTCEPSS rescore
  14. 2026-08-20 22:43 UTCGHSA enrichment
  15. 2026-08-20 09:37 UTCEG score recompute
  16. 2026-08-20 09:37 UTCGHSA enrichment
  17. 2026-08-19 17:03 UTCEPSS rescore
  18. 2026-08-17 06:40 UTCGHSA enrichment
  19. 2026-08-16 16:22 UTCEG score recompute
  20. 2026-08-16 16:22 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 03:04 UTCEG score recompute
  23. 2026-08-16 03:04 UTCGHSA enrichment
  24. 2026-08-16 02:14 UTCEPSS rescore
  25. 2026-08-15 13:58 UTCEG score recompute
Show 75 more
  1. 2026-08-15 13:58 UTCGHSA enrichment
  2. 2026-08-15 01:30 UTCEPSS rescore
  3. 2026-08-15 00:42 UTCGHSA enrichment
  4. 2026-08-14 11:36 UTCGHSA enrichment
  5. 2026-08-13 22:30 UTCEG score recompute
  6. 2026-08-13 22:30 UTCGHSA enrichment
  7. 2026-08-13 22:00 UTCEPSS rescore
  8. 2026-08-13 02:08 UTCEG score recompute
  9. 2026-08-13 02:08 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 13:02 UTCGHSA enrichment
  12. 2026-08-11 23:54 UTCEG score recompute
  13. 2026-08-11 23:54 UTCGHSA enrichment
  14. 2026-08-11 13:42 UTCEPSS rescore
  15. 2026-08-11 10:48 UTCEG score recompute
  16. 2026-08-11 10:48 UTCGHSA enrichment
  17. 2026-08-10 23:59 UTCEPSS rescore
  18. 2026-08-10 21:42 UTCGHSA enrichment
  19. 2026-08-10 06:14 UTCGHSA enrichment
  20. 2026-08-09 17:09 UTCEG score recompute
  21. 2026-08-09 17:09 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 04:03 UTCEG score recompute
  24. 2026-08-09 04:03 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 14:57 UTCGHSA enrichment
  27. 2026-08-08 01:46 UTCEG score recompute
  28. 2026-08-08 01:46 UTCGHSA enrichment
  29. 2026-08-07 12:40 UTCGHSA enrichment
  30. 2026-08-06 23:35 UTCEG score recompute
  31. 2026-08-06 23:35 UTCGHSA enrichment
  32. 2026-08-06 13:46 UTCEPSS rescore
  33. 2026-08-06 09:24 UTCGHSA enrichment
  34. 2026-08-05 20:19 UTCEG score recompute
  35. 2026-08-05 20:19 UTCGHSA enrichment
  36. 2026-08-05 19:17 UTCEPSS rescore
  37. 2026-08-04 18:34 UTCEG score recompute
  38. 2026-08-04 18:34 UTCGHSA enrichment
  39. 2026-08-04 15:09 UTCEPSS rescore
  40. 2026-08-04 10:38 UTCEPSS rescore
  41. 2026-08-04 04:39 UTCGHSA enrichment
  42. 2026-08-03 15:33 UTCEG score recompute
  43. 2026-08-03 15:33 UTCGHSA enrichment
  44. 2026-08-03 10:35 UTCEPSS rescore
  45. 2026-08-03 02:26 UTCGHSA enrichment
  46. 2026-08-02 13:20 UTCEG score recompute
  47. 2026-08-02 13:20 UTCGHSA enrichment
  48. 2026-08-02 02:26 UTCEPSS rescore
  49. 2026-08-02 00:14 UTCGHSA enrichment
  50. 2026-08-01 11:08 UTCEG score recompute
  51. 2026-08-01 11:07 UTCGHSA enrichment
  52. 2026-08-01 04:15 UTCEPSS rescore
  53. 2026-07-31 18:18 UTCGHSA enrichment
  54. 2026-07-31 05:12 UTCEG score recompute
  55. 2026-07-31 05:12 UTCGHSA enrichment
  56. 2026-07-30 16:27 UTCEPSS rescore
  57. 2026-07-30 01:30 UTCEPSS rescore
  58. 2026-07-29 09:32 UTCEG score recompute
  59. 2026-07-29 09:32 UTCGHSA enrichment
  60. 2026-07-28 15:36 UTCEPSS rescore
  61. 2026-07-28 02:59 UTCEG score recompute
  62. 2026-07-28 02:59 UTCGHSA enrichment
  63. 2026-07-27 14:13 UTCEPSS rescore
  64. 2026-07-27 11:01 UTCGHSA enrichment
  65. 2026-07-26 21:52 UTCEG score recompute
  66. 2026-07-26 21:52 UTCGHSA enrichment
  67. 2026-07-26 14:54 UTCEPSS rescore
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-26 07:20 UTCEG score recompute
  70. 2026-07-26 07:20 UTCGHSA enrichment
  71. 2026-07-25 14:17 UTCEPSS rescore
  72. 2026-07-24 14:17 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 03:04 UTCEG score recompute
  75. 2026-07-22 14:08 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 July 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 0% probability of exploitation in the next 30 days, which ranks it in the top 94.8% of all scored CVEs.
What is the CVSS score of CVE-2026-11422?
CVE-2026-11422 has a CVSS v3 base score of 7.1 (NVD).
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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