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 — 3 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 14× in last 7d / 59× 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 141 total refreshes for this CVE.

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

Related CVEs(same CWE)

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 73.4% 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.

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