CVE-2026-49492

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-05. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

Markdown Preview Enhanced before 0.8.28 opens external files and links from the preview through a shell and does not validate untrusted inputs taken from the markdown document - the diagram filename attribute, imported file paths, and the latex_engine code-chunk attribute. On Windows, a crafted markdown document can inject operating system commands that execute when the document is previewed. Fixed in 0.8.28 by passing these inputs as literal arguments instead of through a shell and validating them before use.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

June 5, 2026

Last Modified

June 8, 2026

Advisory Details (2)

Auto-updated Jun 5, 2026
Patch available. Sources: github_release.
generic

Markdown Preview Enhanced OS Command Injection in External File and Link Opening | Advisories | VulnCheck

https://www.vulncheck.com/advisories/markdown-preview-enhanced-os-command-injection-in-external-file-and-link-opening
github_release Patch Available

0.8.28

Patch available: shd101wyy/vscode-markdown-preview-enhanced 0.8.28

https://github.com/shd101wyy/vscode-markdown-preview-enhanced/releases/tag/0.8.28

Vendor Advisories for CVE-2026-49492(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 7× in last 7d / 40× 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 245 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-49492?
CVE-2026-49492 is a high vulnerability published on June 5, 2026. Markdown Preview Enhanced before 0.8.28 opens external files and links from the preview through a shell and does not validate untrusted inputs taken from the markdown document - the diagram filename attribute, imported file paths, and the latex_engine code-chunk attribute. On Windows, a crafted…
When was CVE-2026-49492 disclosed?
CVE-2026-49492 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-49492 actively exploited?
CVE-2026-49492 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 72.8% of all scored CVEs.
What is the CVSS score of CVE-2026-49492?
CVE-2026-49492 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-49492?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49492, 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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