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.
CVE-2026-73653
CRITICALPre-NVD 9.49.4—Trending — 3 sources updated this week
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 52% 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.
- 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 computedSeverity94% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 48%
- KEV
- Not listed
Published
August 13, 2026
Last Modified
August 13, 2026
Advisory Details (10)
Auto-updated Aug 13, 2026Patch available. Sources: github_pr, github_commit, github_release, github.
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.6github_release Patch Available
v4.1.10
Patch available: vitest-dev/vitest v4.1.10
https://github.com/vitest-dev/vitest/releases/tag/v4.1.10github_release Patch Available
v3.2.7
Patch available: vitest-dev/vitest v3.2.7
https://github.com/vitest-dev/vitest/releases/tag/v3.2.7github_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/b795e36b34969bec50b47a9f29d26f799a6a04fbgithub_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/5c18dd267ff7f47f24cab2f615a16b37d90feb7fgithub_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/33f96a145ef09ca6a43b4e555eb273e64a87be23github_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/10680github_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/10679github_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/10674github 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-vcc4-9vmvVendor 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)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @vitest/browser | — | 4.1.10 | — |
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× 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.
- 2026-08-15 03:49 UTCEG score recompute
- 2026-08-15 01:31 UTCEPSS rescore
- 2026-08-13 19:19 UTCEG score recompute
- 2026-08-13 18:32 UTCEG score recompute
- 2026-08-13 18:31 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-22 · CWE-862
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. 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 52.2% 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
Is Your Infrastructure Affected by CVE-2026-73653?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.