CVE-2026-73653

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 51% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.4Exploit: None knownExposed: 0

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

Vitest is a testing framework powered by Vite. Prior to versions 3.2.7, 4.1.10, and 5.0.0-beta.6, Browser Mode provider commands including upload, takeScreenshot, screenshotMatcher, stopChunkTrace, deleteTracing, and annotateTraces accept browser-supplied file paths without enforcing the allowWrite permission gate or confining paths to the project root. A client that can reach the Browser Mode API can read arbitrary local files, create or overwrite image and trace files, or delete files accessible to the Vitest process even when allowWrite is false. This issue is fixed in versions 3.2.7, 4.1.10, and 5.0.0-beta.6.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity94% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

August 13, 2026

Last Modified

September 9, 2026

Advisory Details (10)

Auto-updated Sep 14, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

Browser Mode provider commands bypass the file-access permission gate · Advisory · vitest-dev/vitest · GitHub

https://github.com/vitest-dev/vitest/security/advisories/GHSA-p63j-vcc4-9vmv
github_release Patch Available

v5.0.0-beta.6

Patch available: vitest-dev/vitest v5.0.0-beta.6 (pre-release)

https://github.com/vitest-dev/vitest/releases/tag/v5.0.0-beta.6
github_release Patch Available

v4.1.10

Patch available: vitest-dev/vitest v4.1.10

https://github.com/vitest-dev/vitest/releases/tag/v4.1.10
github_release Patch Available

v3.2.7

Patch available: vitest-dev/vitest v3.2.7

https://github.com/vitest-dev/vitest/releases/tag/v3.2.7
github_pr Patch Available

fix(browser): check fs access in builtin commands [backport to v4]

Patch available: vitest-dev/vitest v4.1.10 (PR #10680 merged 2026-07-01)

https://github.com/vitest-dev/vitest/pull/10680
github_pr Patch Available

fix(browser): check fs access in builtin commands [backport to v3]

Patch available: vitest-dev/vitest v3.2.7 (PR #10679 merged 2026-07-01)

https://github.com/vitest-dev/vitest/pull/10679
github_pr Patch Available

fix(browser): check fs access in builtin commands

Patch available: vitest-dev/vitest v5.0.0-beta.6 (PR #10674 merged 2026-07-01)

https://github.com/vitest-dev/vitest/pull/10674
github_commit Patch Available

commit b795e36b3496 (vitest-dev/vitest)

Patch available: vitest-dev/vitest v3.2.7 (contains commit b795e36b3496)

https://github.com/vitest-dev/vitest/commit/b795e36b34969bec50b47a9f29d26f799a6a04fb
github_commit Patch Available

commit 5c18dd267ff7 (vitest-dev/vitest)

Patch available: vitest-dev/vitest v4.1.10 (contains commit 5c18dd267ff7)

https://github.com/vitest-dev/vitest/commit/5c18dd267ff7f47f24cab2f615a16b37d90feb7f
github_commit Patch Available

commit 33f96a145ef0 (vitest-dev/vitest)

Patch available: vitest-dev/vitest v5.0.0-beta.6 (contains commit 33f96a145ef0)

https://github.com/vitest-dev/vitest/commit/33f96a145ef09ca6a43b4e555eb273e64a87be23

Vendor Advisories for CVE-2026-73653(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@vitest/browser—5.0.0-beta.6—

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 54× 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.

  1. 2026-09-18 22:08 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-17 22:18 UTCEG score recompute
  4. 2026-09-16 23:59 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 10:28 UTCEG score recompute
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 04:19 UTCEG score recompute
  9. 2026-09-15 03:12 UTCEPSS rescore
  10. 2026-09-13 17:09 UTCEG score recompute
  11. 2026-09-12 15:28 UTCEG score recompute
  12. 2026-09-12 15:02 UTCEPSS rescore
  13. 2026-09-11 17:42 UTCEG score recompute
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 13:41 UTCEG score recompute
  16. 2026-09-10 12:49 UTCEG score recompute
  17. 2026-09-10 09:35 UTCEPSS rescore
  18. 2026-09-09 04:55 UTCEG score recompute
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-07 16:31 UTCEG score recompute
  21. 2026-09-06 16:39 UTCEG score recompute
  22. 2026-09-06 13:48 UTCEPSS rescore
  23. 2026-09-05 18:58 UTCEG score recompute
  24. 2026-09-04 17:13 UTCEG score recompute
  25. 2026-09-04 06:15 UTCEG score recompute
Show 46 more
  1. 2026-09-04 05:07 UTCEPSS rescore
  2. 2026-09-02 23:04 UTCEG score recompute
  3. 2026-09-02 14:12 UTCEPSS rescore
  4. 2026-09-01 15:12 UTCEG score recompute
  5. 2026-09-01 13:54 UTCEPSS rescore
  6. 2026-09-01 06:14 UTCEG score recompute
  7. 2026-09-01 04:40 UTCEPSS rescore
  8. 2026-09-01 04:40 UTCEPSS rescore
  9. 2026-08-30 21:55 UTCEG score recompute
  10. 2026-08-30 19:18 UTCEPSS rescore
  11. 2026-08-30 19:17 UTCEPSS rescore
  12. 2026-08-30 03:40 UTCEG score recompute
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-29 07:32 UTCEG score recompute
  15. 2026-08-28 21:42 UTCEPSS rescore
  16. 2026-08-27 19:32 UTCEG score recompute
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 15:08 UTCEG score recompute
  19. 2026-08-26 14:47 UTCEPSS rescore
  20. 2026-08-25 17:13 UTCEG score recompute
  21. 2026-08-25 13:49 UTCEPSS rescore
  22. 2026-08-24 15:51 UTCEG score recompute
  23. 2026-08-24 12:14 UTCEG score recompute
  24. 2026-08-23 03:43 UTCEG score recompute
  25. 2026-08-23 00:19 UTCEPSS rescore
  26. 2026-08-22 02:23 UTCEG score recompute
  27. 2026-08-21 23:49 UTCEPSS rescore
  28. 2026-08-21 01:06 UTCEG score recompute
  29. 2026-08-20 22:56 UTCEPSS rescore
  30. 2026-08-19 20:09 UTCEG score recompute
  31. 2026-08-19 17:04 UTCEPSS rescore
  32. 2026-08-18 15:11 UTCEG score recompute
  33. 2026-08-18 13:49 UTCEPSS rescore
  34. 2026-08-18 13:49 UTCEPSS rescore
  35. 2026-08-17 17:24 UTCEG score recompute
  36. 2026-08-17 13:47 UTCEPSS rescore
  37. 2026-08-16 15:57 UTCEG score recompute
  38. 2026-08-16 14:56 UTCEPSS rescore
  39. 2026-08-16 14:56 UTCEPSS rescore
  40. 2026-08-16 05:07 UTCEG score recompute
  41. 2026-08-16 02:15 UTCEPSS rescore
  42. 2026-08-15 03:49 UTCEG score recompute
  43. 2026-08-15 01:31 UTCEPSS rescore
  44. 2026-08-13 19:19 UTCEG score recompute
  45. 2026-08-13 18:32 UTCEG score recompute
  46. 2026-08-13 18:31 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73653?
CVE-2026-73653 is a critical vulnerability published on August 13, 2026. Vitest is a testing framework powered by Vite. Prior to versions 3.2.7, 4.1.10, and 5.0.0-beta.6, Browser Mode provider commands including upload, takeScreenshot, screenshotMatcher, stopChunkTrace, deleteTracing, and annotateTraces accept browser-supplied file paths without enforcing the allowWrite…
When was CVE-2026-73653 disclosed?
CVE-2026-73653 was first published in the National Vulnerability Database on August 13, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73653 actively exploited?
CVE-2026-73653 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 50.6% of all scored CVEs.
What is the CVSS score of CVE-2026-73653?
CVE-2026-73653 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-73653?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73653, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73653

Explore →

Is Your Infrastructure Affected by CVE-2026-73653?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs