CVE-2026-73088

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 71% 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
Trending — Patch released this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json, opts.stats, and CLI --stats data with an unguarded for...in loop and plain-object bracket access and assignment, allowing inherited Object.prototype keys including __proto__, toString, valueOf, constructor, hasOwnProperty, and isPrototypeOf to cause an uncaught TypeError or modify the prototype of the returned normalized object. This issue is fixed in version 4.28.7.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 13, 2026

Advisory Details (3)

Auto-updated Aug 12, 2026
Patch available. Sources: github_commit, github_release, github.
github Patch Available

Uncaught crash / prototype write via untrusted browserslist-stats.json custom stats (normalizeStats) · Advisory · browserslist/browserslist · GitHub

https://github.com/browserslist/browserslist/security/advisories/GHSA-73wf-gq98-2v4g
github_release Patch Available

4.28.7

Patch available: browserslist/browserslist 4.28.7

https://github.com/browserslist/browserslist/releases/tag/4.28.7
github_commit Patch Available

commit f9914ad9effc (browserslist/browserslist)

Patch available: browserslist/browserslist 4.28.7 (contains commit f9914ad9effc)

https://github.com/browserslist/browserslist/commit/f9914ad9effc865ccc27d816255625890b31ca51

Vendor Advisories for CVE-2026-73088(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgrafana12-4-main-12.4.8-0.1.1.hum12026-08-13redhat
redhatgrafana13-1-main-13.1.3-0.1.1.hum12026-08-13redhat
redhatdiscovery/discovery-ui-rhel9:17866348252026-08-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 18× 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. 2026-08-15 11:13 UTCEG score recompute
  2. 2026-08-15 11:13 UTCVendor advisory
  3. 2026-08-15 01:31 UTCEPSS rescore
  4. 2026-08-15 00:16 UTCVendor advisory
  5. 2026-08-14 13:20 UTCVendor advisory
  6. 2026-08-14 02:24 UTCEG score recompute
  7. 2026-08-14 02:24 UTCVendor advisory
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-13 15:28 UTCEG score recompute
  10. 2026-08-13 15:28 UTCVendor advisory
  11. 2026-08-13 15:16 UTCEG score recompute
  12. 2026-08-13 15:16 UTCVendor advisory
  13. 2026-08-13 13:27 UTCVendor advisory
  14. 2026-08-12 15:35 UTCEG score recompute
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-11 17:43 UTCEG score recompute
  17. 2026-08-11 17:18 UTCEG score recompute
  18. 2026-08-11 17:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73088?
CVE-2026-73088 is a high vulnerability published on August 11, 2026. Browserslist is a configuration tool for sharing target browsers and Node.js versions between front-end tools. Prior to 4.28.7, normalizeStats() in node.js, reached unconditionally through getStat() and loadStat() on every browserslist() call, processes untrusted browserslist-stats.json,…
When was CVE-2026-73088 disclosed?
CVE-2026-73088 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update 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-2026-73088 actively exploited?
CVE-2026-73088 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 70.9% of all scored CVEs.
What is the CVSS score of CVE-2026-73088?
CVE-2026-73088 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-73088?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73088, 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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